From 2c031495c5700900d5274e90259ae7b5df395878 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 2 Jan 2025 19:45:17 +0900
Subject: [PATCH 01/52] =?UTF-8?q?=EB=B0=B0=EC=97=B4=20=EC=9E=90=EB=A5=B4?=
 =?UTF-8?q?=EA=B8=B0=20/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 oh-chaeyeon/.gitkeep                                          | 0
 ...0\260\354\227\264_\354\236\220\353\245\264\352\270\260.js" | 4 ++++
 2 files changed, 4 insertions(+)
 delete mode 100644 oh-chaeyeon/.gitkeep
 create mode 100644 "oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\260\260\354\227\264_\354\236\220\353\245\264\352\270\260.js"

diff --git a/oh-chaeyeon/.gitkeep b/oh-chaeyeon/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git "a/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\260\260\354\227\264_\354\236\220\353\245\264\352\270\260.js" "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\260\260\354\227\264_\354\236\220\353\245\264\352\270\260.js"
new file mode 100644
index 0000000..1a6ac9f
--- /dev/null
+++ "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\260\260\354\227\264_\354\236\220\353\245\264\352\270\260.js"
@@ -0,0 +1,4 @@
+function solution(numbers, num1, num2) {
+  var answer = numbers.slice(num1, num2 + 1);
+  return answer;
+}

From b307f9513f384cbbb7ed797fce75579c15a94158 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 2 Jan 2025 19:45:26 +0900
Subject: [PATCH 02/52] =?UTF-8?q?=EB=B0=B0=EC=97=B4=20=EC=9B=90=EC=86=8C?=
 =?UTF-8?q?=EC=9D=98=20=EA=B8=B8=EC=9D=B4=20/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...33\220\354\206\214\354\235\230_\352\270\270\354\235\264.js" | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 "oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\260\260\354\227\264_\354\233\220\354\206\214\354\235\230_\352\270\270\354\235\264.js"

diff --git "a/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\260\260\354\227\264_\354\233\220\354\206\214\354\235\230_\352\270\270\354\235\264.js" "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\260\260\354\227\264_\354\233\220\354\206\214\354\235\230_\352\270\270\354\235\264.js"
new file mode 100644
index 0000000..f4ec8ad
--- /dev/null
+++ "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\260\260\354\227\264_\354\233\220\354\206\214\354\235\230_\352\270\270\354\235\264.js"
@@ -0,0 +1,3 @@
+function solution(strlist) {
+  return strlist.map((str) => str.length);
+}

From 280b7948e998f638d412002be227ce9723010d52 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 2 Jan 2025 19:45:41 +0900
Subject: [PATCH 03/52] =?UTF-8?q?=EB=B0=B0=EC=97=B4=20=ED=9A=8C=EC=A0=84?=
 =?UTF-8?q?=EC=8B=9C=ED=82=A4=EA=B8=B0=20/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...354\240\204\354\213\234\355\202\244\352\270\260.js" | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 "oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\260\260\354\227\264_\355\232\214\354\240\204\354\213\234\355\202\244\352\270\260.js"

diff --git "a/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\260\260\354\227\264_\355\232\214\354\240\204\354\213\234\355\202\244\352\270\260.js" "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\260\260\354\227\264_\355\232\214\354\240\204\354\213\234\355\202\244\352\270\260.js"
new file mode 100644
index 0000000..ad1b45f
--- /dev/null
+++ "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\260\260\354\227\264_\355\232\214\354\240\204\354\213\234\355\202\244\352\270\260.js"
@@ -0,0 +1,10 @@
+function solution(numbers, direction) {
+  if (direction === "right") {
+    return [
+      numbers[numbers.length - 1],
+      ...numbers.slice(0, numbers.length - 1),
+    ];
+  } else if (direction === "left") {
+    return [...numbers.slice(1), numbers[0]];
+  }
+}

From 2465ff2b0139305432c18f3b68711a6bcb5e0e52 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 2 Jan 2025 19:46:02 +0900
Subject: [PATCH 04/52] =?UTF-8?q?=EC=A4=91=EB=B3=B5=EB=90=9C=20=EC=88=AB?=
 =?UTF-8?q?=EC=9E=90=20=EA=B0=9C=EC=88=98=20/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...34_\354\210\253\354\236\220_\352\260\234\354\210\230.js" | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 "oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\354\244\221\353\263\265\353\220\234_\354\210\253\354\236\220_\352\260\234\354\210\230.js"

diff --git "a/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\354\244\221\353\263\265\353\220\234_\354\210\253\354\236\220_\352\260\234\354\210\230.js" "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\354\244\221\353\263\265\353\220\234_\354\210\253\354\236\220_\352\260\234\354\210\230.js"
new file mode 100644
index 0000000..6e41d12
--- /dev/null
+++ "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\354\244\221\353\263\265\353\220\234_\354\210\253\354\236\220_\352\260\234\354\210\230.js"
@@ -0,0 +1,6 @@
+function solution(array, n) {
+  var answer = array.reduce((count, num) => {
+    return num === n ? count + 1 : count;
+  }, 0);
+  return answer;
+}

From 9b120c8f0fd55d09dbe97ae4a404f5301c70b9bc Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 2 Jan 2025 20:10:25 +0900
Subject: [PATCH 05/52] =?UTF-8?q?=EC=A0=9C=EC=9D=BC=20=EC=9E=91=EC=9D=80?=
 =?UTF-8?q?=20=EC=88=98=20=EC=A0=9C=EA=B1=B0=ED=95=98=EA=B8=B0=20/=20?=
 =?UTF-8?q?=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...\230_\354\240\234\352\261\260\355\225\230\352\270\260.js" | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 "oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\354\240\234\354\235\274_\354\236\221\354\235\200_\354\210\230_\354\240\234\352\261\260\355\225\230\352\270\260.js"

diff --git "a/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\354\240\234\354\235\274_\354\236\221\354\235\200_\354\210\230_\354\240\234\352\261\260\355\225\230\352\270\260.js" "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\354\240\234\354\235\274_\354\236\221\354\235\200_\354\210\230_\354\240\234\352\261\260\355\225\230\352\270\260.js"
new file mode 100644
index 0000000..ed23df3
--- /dev/null
+++ "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\354\240\234\354\235\274_\354\236\221\354\235\200_\354\210\230_\354\240\234\352\261\260\355\225\230\352\270\260.js"
@@ -0,0 +1,5 @@
+function solution(arr) {
+  const min = Math.min(...arr);
+  var answer = arr.filter((num) => num !== min);
+  return answer.length === 0 ? [-1] : answer;
+}

From e54d44a702db28852b26538b91dbaebfbf08c8e3 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 2 Jan 2025 20:10:37 +0900
Subject: [PATCH 06/52] =?UTF-8?q?=ED=96=89=EB=A0=AC=EC=9D=98=20=EB=8D=A7?=
 =?UTF-8?q?=EC=85=88=20/=20=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...1\353\240\254\354\235\230_\353\215\247\354\205\210.js" | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 "oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\355\226\211\353\240\254\354\235\230_\353\215\247\354\205\210.js"

diff --git "a/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\355\226\211\353\240\254\354\235\230_\353\215\247\354\205\210.js" "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\355\226\211\353\240\254\354\235\230_\353\215\247\354\205\210.js"
new file mode 100644
index 0000000..ef51f3b
--- /dev/null
+++ "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\355\226\211\353\240\254\354\235\230_\353\215\247\354\205\210.js"
@@ -0,0 +1,8 @@
+function solution(arr1, arr2) {
+  var answer = arr1.map((row, i) => {
+    return row.map((num, j) => {
+      return num + arr2[i][j];
+    });
+  });
+  return answer;
+}

From 7f618bf780f41b05a88b760dd8c50dc4b9007478 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 2 Jan 2025 20:10:52 +0900
Subject: [PATCH 07/52] =?UTF-8?q?=EB=82=98=EB=88=84=EC=96=B4=20=EB=96=A8?=
 =?UTF-8?q?=EC=96=B4=EC=A7=80=EB=8A=94=20=EC=88=AB=EC=9E=90=20=EB=B0=B0?=
 =?UTF-8?q?=EC=97=B4=20/=20=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...224_\354\210\253\354\236\220_\353\260\260\354\227\264.js" | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 "oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\202\230\353\210\204\354\226\264_\353\226\250\354\226\264\354\247\200\353\212\224_\354\210\253\354\236\220_\353\260\260\354\227\264.js"

diff --git "a/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\202\230\353\210\204\354\226\264_\353\226\250\354\226\264\354\247\200\353\212\224_\354\210\253\354\236\220_\353\260\260\354\227\264.js" "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\202\230\353\210\204\354\226\264_\353\226\250\354\226\264\354\247\200\353\212\224_\354\210\253\354\236\220_\353\260\260\354\227\264.js"
new file mode 100644
index 0000000..a31726d
--- /dev/null
+++ "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\353\202\230\353\210\204\354\226\264_\353\226\250\354\226\264\354\247\200\353\212\224_\354\210\253\354\236\220_\353\260\260\354\227\264.js"
@@ -0,0 +1,5 @@
+function solution(arr, divisor) {
+  var answer = arr.filter((num) => num % divisor === 0);
+  if (answer.length === 0) return [-1];
+  return answer.sort((a, b) => a - b);
+}

From 121d553d7936cb1ab44ed08c39b3fc89bb30dae7 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 2 Jan 2025 21:26:36 +0900
Subject: [PATCH 08/52] =?UTF-8?q?=ED=96=89=EB=A0=AC=EC=9D=98=20=EA=B3=B1?=
 =?UTF-8?q?=EC=85=88=20/=20=EC=8B=AC=ED=99=94?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...254\354\235\230_\352\263\261\354\205\210.js" | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 "oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\355\226\211\353\240\254\354\235\230_\352\263\261\354\205\210.js"

diff --git "a/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\355\226\211\353\240\254\354\235\230_\352\263\261\354\205\210.js" "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\355\226\211\353\240\254\354\235\230_\352\263\261\354\205\210.js"
new file mode 100644
index 0000000..1d6cebc
--- /dev/null
+++ "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\355\226\211\353\240\254\354\235\230_\352\263\261\354\205\210.js"
@@ -0,0 +1,17 @@
+function solution(arr1, arr2) {
+  const rowsA = arr1.length;
+  const colsA = arr1[0].length;
+  const colsB = arr2[0].length;
+
+  const result = Array.from({ length: rowsA }, () => Array(colsB).fill(0));
+
+  // 행렬 곱셈
+  for (let i = 0; i < rowsA; i++) {
+    for (let j = 0; j < colsB; j++) {
+      for (let k = 0; k < colsA; k++) {
+        result[i][j] += arr1[i][k] * arr2[k][j];
+      }
+    }
+  }
+  return result;
+}

From 1c9229c5f079a90b2f5ccba57648e379a5508e3c Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 2 Jan 2025 21:27:08 +0900
Subject: [PATCH 09/52] =?UTF-8?q?=EA=B5=90=EC=A0=90=EC=97=90=20=EB=B3=84?=
 =?UTF-8?q?=20=EB=A7=8C=EB=93=A4=EA=B8=B0=20/=20=EC=8B=AC=ED=99=94?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...4_\353\247\214\353\223\244\352\270\260.js" | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 "oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\352\265\220\354\240\220\354\227\220_\353\263\204_\353\247\214\353\223\244\352\270\260.js"

diff --git "a/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\352\265\220\354\240\220\354\227\220_\353\263\204_\353\247\214\353\223\244\352\270\260.js" "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\352\265\220\354\240\220\354\227\220_\353\263\204_\353\247\214\353\223\244\352\270\260.js"
new file mode 100644
index 0000000..35d108a
--- /dev/null
+++ "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/\352\265\220\354\240\220\354\227\220_\353\263\204_\353\247\214\353\223\244\352\270\260.js"
@@ -0,0 +1,39 @@
+function solution(line) {
+  const points = [];
+
+  for (let i = 0; i < line.length; i++) {
+    for (let j = i + 1; j < line.length; j++) {
+      const [A1, B1, C1] = line[i];
+      const [A2, B2, C2] = line[j];
+
+      const denominator = A1 * B2 - A2 * B1;
+
+      if (denominator !== 0) {
+        const x = (B1 * C2 - B2 * C1) / denominator;
+        const y = (A2 * C1 - A1 * C2) / denominator;
+
+        if (Number.isInteger(x) && Number.isInteger(y)) {
+          points.push([x, y]);
+        }
+      }
+    }
+  }
+
+  const xs = points.map((point) => point[0]);
+  const ys = points.map((point) => point[1]);
+
+  const minX = Math.min(...xs);
+  const maxX = Math.max(...xs);
+  const minY = Math.min(...ys);
+  const maxY = Math.max(...ys);
+
+  const width = maxX - minX + 1;
+  const height = maxY - minY + 1;
+  const grid = Array.from({ length: height }, () => Array(width).fill("."));
+
+  for (const [x, y] of points) {
+    grid[maxY - y][x - minX] = "*";
+  }
+
+  return grid.map((row) => row.join(""));
+}

From 865c25746aa4d5f78e08a167e6b01d9a486e6117 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 2 Jan 2025 21:27:20 +0900
Subject: [PATCH 10/52] =?UTF-8?q?n^2=20=EB=B0=B0=EC=97=B4=20=EC=9E=90?=
 =?UTF-8?q?=EB=A5=B4=EA=B8=B0=20/=20=EC=8B=AC=ED=99=94?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...\354\227\264_\354\236\220\353\245\264\352\270\260.js" | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 "oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/n^2_\353\260\260\354\227\264_\354\236\220\353\245\264\352\270\260.js"

diff --git "a/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/n^2_\353\260\260\354\227\264_\354\236\220\353\245\264\352\270\260.js" "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/n^2_\353\260\260\354\227\264_\354\236\220\353\245\264\352\270\260.js"
new file mode 100644
index 0000000..7d803a8
--- /dev/null
+++ "b/oh-chaeyeon/1\354\243\274\354\260\250_\353\260\260\354\227\264/n^2_\353\260\260\354\227\264_\354\236\220\353\245\264\352\270\260.js"
@@ -0,0 +1,9 @@
+function solution(n, left, right) {
+  const answer = [];
+  for (let k = left; k <= right; k++) {
+    const i = Math.floor(k / n);
+    const j = k % n;
+    answer.push(Math.max(i, j) + 1);
+  }
+  return answer;
+}

From ea88f07de1c44bc70d9f91e27809650bf2be1b02 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Sun, 12 Jan 2025 02:09:57 +0900
Subject: [PATCH 11/52] =?UTF-8?q?String=20Reversal=20/=20=EA=B8=B0?=
 =?UTF-8?q?=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../String_Reversal.js"                                        | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 "oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/String_Reversal.js"

diff --git "a/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/String_Reversal.js" "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/String_Reversal.js"
new file mode 100644
index 0000000..cae1e0c
--- /dev/null
+++ "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/String_Reversal.js"
@@ -0,0 +1,3 @@
+function solution(my_string) {
+  return my_string.split("").reverse().join("");
+}

From 3f26859808e2143a96051c0d5e0cdaddeabb0c1c Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Sun, 12 Jan 2025 02:10:13 +0900
Subject: [PATCH 12/52] =?UTF-8?q?Control=20Z=20/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Control_Z.js"                                  | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 "oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Control_Z.js"

diff --git "a/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Control_Z.js" "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Control_Z.js"
new file mode 100644
index 0000000..4086d55
--- /dev/null
+++ "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Control_Z.js"
@@ -0,0 +1,14 @@
+function solution(s) {
+  const elements = s.split(" ");
+  let total = 0;
+
+  for (let i = 0; i < elements.length; i++) {
+    if (elements[i] === "Z") {
+      total -= parseInt(elements[i - 1]);
+    } else {
+      total += parseInt(elements[i]);
+    }
+  }
+
+  return total;
+}

From a8c82b3031f036f7c9d29322f1f452e290c8436a Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Sun, 12 Jan 2025 02:10:31 +0900
Subject: [PATCH 13/52] =?UTF-8?q?Hate=20English=20/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Hate_English.js"                          | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 "oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Hate_English.js"

diff --git "a/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Hate_English.js" "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Hate_English.js"
new file mode 100644
index 0000000..245d676
--- /dev/null
+++ "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Hate_English.js"
@@ -0,0 +1,22 @@
+function solution(numbers) {
+  return parseInt(
+    numbers.replace(
+      /zero|one|two|three|four|five|six|seven|eight|nine/g,
+      (match) => {
+        const numWords = {
+          zero: "0",
+          one: "1",
+          two: "2",
+          three: "3",
+          four: "4",
+          five: "5",
+          six: "6",
+          seven: "7",
+          eight: "8",
+          nine: "9",
+        };
+        return numWords[match];
+      }
+    )
+  );
+}

From 4a4f3f267702c21f4bb194d794fdec17a6811414 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Sun, 12 Jan 2025 02:10:45 +0900
Subject: [PATCH 14/52] =?UTF-8?q?String=20Calculation=20/=20=EA=B8=B0?=
 =?UTF-8?q?=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../String_Calculation.js"                                     | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 "oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/String_Calculation.js"

diff --git "a/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/String_Calculation.js" "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/String_Calculation.js"
new file mode 100644
index 0000000..50bd5cc
--- /dev/null
+++ "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/String_Calculation.js"
@@ -0,0 +1,3 @@
+function solution(my_string) {
+  return eval(my_string);
+}

From d30a080545507aafb355477bccb9d658b3d71591 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Sun, 12 Jan 2025 02:29:07 +0900
Subject: [PATCH 15/52] =?UTF-8?q?Crane=20Game=20/=20=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Crane_Game.js"                            | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 "oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Crane_Game.js"

diff --git "a/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Crane_Game.js" "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Crane_Game.js"
new file mode 100644
index 0000000..1c4f3f1
--- /dev/null
+++ "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Crane_Game.js"
@@ -0,0 +1,25 @@
+function solution(board, moves) {
+  const basket = [];
+  let count = 0;
+
+  for (let move of moves) {
+    const column = move - 1;
+
+    for (let i = 0; i < board.length; i++) {
+      if (board[i][column] !== 0) {
+        const doll = board[i][column];
+        board[i][column] = 0;
+
+        if (basket[basket.length - 1] === doll) {
+          basket.pop();
+          count += 2;
+        } else {
+          basket.push(doll);
+        }
+        break;
+      }
+    }
+  }
+
+  return count;
+}

From a560deb1672bc9f655c4090021abcdd7edb07dea Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Sun, 12 Jan 2025 02:29:17 +0900
Subject: [PATCH 16/52] =?UTF-8?q?Valid=20Parentheses=20/=20=EC=A4=91?=
 =?UTF-8?q?=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Valid_Parentheses.js"                         | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 "oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Valid_Parentheses.js"

diff --git "a/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Valid_Parentheses.js" "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Valid_Parentheses.js"
new file mode 100644
index 0000000..1aee364
--- /dev/null
+++ "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Valid_Parentheses.js"
@@ -0,0 +1,15 @@
+function solution(s) {
+  const stack = [];
+
+  for (let char of s) {
+    if (char === "(") {
+      stack.push(char);
+    } else if (stack.length > 0) {
+      stack.pop();
+    } else {
+      return false;
+    }
+  }
+
+  return stack.length === 0;
+}

From 7dadd5d46b69bf1a168d83f534c6a3f55f72332d Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Sun, 12 Jan 2025 02:29:33 +0900
Subject: [PATCH 17/52] =?UTF-8?q?Dart=20Game=20/=20=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Dart_Game.js"                             | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 "oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Dart_Game.js"

diff --git "a/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Dart_Game.js" "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Dart_Game.js"
new file mode 100644
index 0000000..8b568f2
--- /dev/null
+++ "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Dart_Game.js"
@@ -0,0 +1,24 @@
+function solution(dartResult) {
+  const stack = [];
+  let i = 0;
+
+  while (i < dartResult.length) {
+    const isTen = dartResult[i] === "1" && dartResult[i + 1] === "0";
+    let score = isTen ? 10 : parseInt(dartResult[i]);
+    i += isTen ? 2 : 1;
+
+    const bonus = dartResult[i++];
+    score **= bonus === "S" ? 1 : bonus === "D" ? 2 : 3;
+
+    if (dartResult[i] === "*" || dartResult[i] === "#") {
+      score *= dartResult[i] === "*" ? 2 : -1;
+      if (dartResult[i++] === "*" && stack.length) {
+        stack[stack.length - 1] *= 2;
+      }
+    }
+
+    stack.push(score);
+  }
+
+  return stack.reduce((sum, cur) => sum + cur, 0);
+}

From b2fdfc604401db9470b1e9ec6be059137b3f16dc Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Sun, 12 Jan 2025 02:56:39 +0900
Subject: [PATCH 18/52] =?UTF-8?q?Rotate=20Parentheses=20/=20=EC=8B=AC?=
 =?UTF-8?q?=ED=99=94?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Rotate_Parentheses.js"                    | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 "oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Rotate_Parentheses.js"

diff --git "a/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Rotate_Parentheses.js" "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Rotate_Parentheses.js"
new file mode 100644
index 0000000..599ac03
--- /dev/null
+++ "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Rotate_Parentheses.js"
@@ -0,0 +1,25 @@
+function solution(s) {
+  let answer = 0;
+  for (let i = 0; i < s.length; i++) {
+    const rotated = s.slice(i) + s.slice(0, i);
+    if (isValid(rotated)) answer++;
+  }
+  return answer;
+}
+
+function isValid(str) {
+  const stack = [];
+  for (let c of str) {
+    if ("([{".includes(c)) stack.push(c);
+    else if (!stack.length || !isPair(stack.pop(), c)) return false;
+  }
+  return stack.length === 0;
+}
+
+function isPair(open, close) {
+  return (
+    (open === "(" && close === ")") ||
+    (open === "[" && close === "]") ||
+    (open === "{" && close === "}")
+  );
+}

From e00f4cd427891a1babde9136a588813b53f2ae3a Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Sun, 12 Jan 2025 02:56:51 +0900
Subject: [PATCH 19/52] =?UTF-8?q?Stock=20Price=20/=20=EC=8B=AC=ED=99=94?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Stock_Price.js"                            | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 "oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Stock_Price.js"

diff --git "a/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Stock_Price.js" "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Stock_Price.js"
new file mode 100644
index 0000000..f5d8d0c
--- /dev/null
+++ "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Stock_Price.js"
@@ -0,0 +1,18 @@
+function solution(prices) {
+  const answer = Array(prices.length).fill(0);
+  const stack = [];
+
+  prices.forEach((price, i) => {
+    while (stack.length && prices[stack[stack.length - 1]] > price) {
+      const idx = stack.pop();
+      answer[idx] = i - idx;
+    }
+    stack.push(i);
+  });
+
+  stack.forEach((idx) => {
+    answer[idx] = prices.length - 1 - idx;
+  });
+
+  return answer;
+}

From 9bd1415eae963d2ea2e8690c3823a9838177ee2e Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Sun, 12 Jan 2025 02:56:58 +0900
Subject: [PATCH 20/52] =?UTF-8?q?Delivery=20Box=20/=20=EC=8B=AC=ED=99=94?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Delivery_Box.js"                           | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 "oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Delivery_Box.js"

diff --git "a/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Delivery_Box.js" "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Delivery_Box.js"
new file mode 100644
index 0000000..3d13dd4
--- /dev/null
+++ "b/oh-chaeyeon/2\354\243\274\354\260\250_\354\212\244\355\203\235/Delivery_Box.js"
@@ -0,0 +1,18 @@
+function solution(order) {
+  let stack = [];
+  let current = 1;
+  let count = 0;
+
+  for (let box of order) {
+    while (current <= box) {
+      stack.push(current++);
+    }
+    if (stack.pop() === box) {
+      count++;
+    } else {
+      break;
+    }
+  }
+
+  return count;
+}

From 8b3840d16c81c88cb710f6a865a10df175fcfe6c Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 16 Jan 2025 21:57:22 +0900
Subject: [PATCH 21/52] =?UTF-8?q?=EC=88=9C=EC=84=9C=EC=8C=8D=EC=9D=98=20?=
 =?UTF-8?q?=EA=B0=9C=EC=88=98=20/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Number_of_Ordered_Pairs.js"                      | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 "oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Number_of_Ordered_Pairs.js"

diff --git "a/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Number_of_Ordered_Pairs.js" "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Number_of_Ordered_Pairs.js"
new file mode 100644
index 0000000..c7c3925
--- /dev/null
+++ "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Number_of_Ordered_Pairs.js"
@@ -0,0 +1,12 @@
+function solution(n) {
+  let num = 0;
+  for (let i = 1; i * i <= n; i++) {
+    if (n % i === 0) {
+      num += 2;
+      if (i * i === n) {
+        num--;
+      }
+    }
+  }
+  return num;
+}

From 071e7cc121643792888a36e2035cdd9ae19f5740 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 16 Jan 2025 21:57:37 +0900
Subject: [PATCH 22/52] =?UTF-8?q?=EC=A0=90=EC=9D=98=20=EC=9C=84=EC=B9=98?=
 =?UTF-8?q?=20=EA=B5=AC=ED=95=98=EA=B8=B0=20/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Finding_the_Position_of_Points.js"            | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 "oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Finding_the_Position_of_Points.js"

diff --git "a/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Finding_the_Position_of_Points.js" "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Finding_the_Position_of_Points.js"
new file mode 100644
index 0000000..7ac4ac6
--- /dev/null
+++ "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Finding_the_Position_of_Points.js"
@@ -0,0 +1,15 @@
+function solution(dot) {
+  const x = dot[0];
+  const y = dot[1];
+
+  switch (true) {
+    case x > 0 && y > 0:
+      return 1;
+    case x < 0 && y > 0:
+      return 2;
+    case x < 0 && y < 0:
+      return 3;
+    case x > 0 && y < 0:
+      return 4;
+  }
+}

From 5b021682591c21b524eaaba6711e514e42830a3b Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 16 Jan 2025 21:57:52 +0900
Subject: [PATCH 23/52] =?UTF-8?q?=EB=A1=9C=EA=B7=B8=EC=9D=B8=20=EC=84=B1?=
 =?UTF-8?q?=EA=B3=B5=3F=20/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Login_Successful.js"                              | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 "oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Login_Successful.js"

diff --git "a/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Login_Successful.js" "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Login_Successful.js"
new file mode 100644
index 0000000..19f24e8
--- /dev/null
+++ "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Login_Successful.js"
@@ -0,0 +1,11 @@
+function solution(id_pw, db) {
+  const [id, pw] = id_pw;
+
+  for (const [dbId, dbPw] of db) {
+    if (dbId === id) {
+      return dbPw === pw ? "login" : "wrong pw";
+    }
+  }
+
+  return "fail";
+}

From a358d28b65a10befcc8cad2aa7a441927b90935a Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 16 Jan 2025 21:58:04 +0900
Subject: [PATCH 24/52] =?UTF-8?q?=ED=8A=B9=EC=9D=B4=ED=95=9C=20=EC=A0=95?=
 =?UTF-8?q?=EB=A0=AC=20/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Unusual_Sorting.js"                               | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 "oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Unusual_Sorting.js"

diff --git "a/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Unusual_Sorting.js" "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Unusual_Sorting.js"
new file mode 100644
index 0000000..a334ff9
--- /dev/null
+++ "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Unusual_Sorting.js"
@@ -0,0 +1,11 @@
+function solution(numlist, n) {
+  return numlist.sort((a, b) => {
+    const A = Math.abs(a - n);
+    const B = Math.abs(b - n);
+
+    if (A === B) {
+      return b - a;
+    }
+    return A - B;
+  });
+}

From d0819a1126de1d8fde41e48fb44578b8ccdec0da Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Sat, 18 Jan 2025 16:08:23 +0900
Subject: [PATCH 25/52] =?UTF-8?q?=EC=B9=B4=EB=93=9C=20=EB=AD=89=EC=B9=98?=
 =?UTF-8?q?=20/=20=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Deck_of_Cards.js"                             | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 "oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Deck_of_Cards.js"

diff --git "a/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Deck_of_Cards.js" "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Deck_of_Cards.js"
new file mode 100644
index 0000000..de4fdc3
--- /dev/null
+++ "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Deck_of_Cards.js"
@@ -0,0 +1,15 @@
+function solution(cards1, cards2, goal) {
+  const q1 = [...cards1];
+  const q2 = [...cards2];
+
+  for (const word of goal) {
+    if (q1.length > 0 && q1[0] === word) {
+      q1.shift();
+    } else if (q2.length > 0 && q2[0] === word) {
+      q2.shift();
+    } else {
+      return "No";
+    }
+  }
+  return "Yes";
+}

From 420da51421a242a5e54ce7ff0f14fd157db80822 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Sat, 18 Jan 2025 16:08:40 +0900
Subject: [PATCH 26/52] =?UTF-8?q?=EA=B3=B5=EC=9B=90=20=EC=82=B0=EC=B1=85?=
 =?UTF-8?q?=20=20/=20=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Walking_in_the_Park.js"                   | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 "oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Walking_in_the_Park.js"

diff --git "a/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Walking_in_the_Park.js" "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Walking_in_the_Park.js"
new file mode 100644
index 0000000..ea6280f
--- /dev/null
+++ "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Walking_in_the_Park.js"
@@ -0,0 +1,44 @@
+function solution(park, routes) {
+  const directions = { N: [-1, 0], S: [1, 0], W: [0, -1], E: [0, 1] };
+  let x, y;
+
+  for (let i = 0; i < park.length; i++) {
+    const j = park[i].indexOf("S");
+    if (j !== -1) {
+      x = i;
+      y = j;
+      break;
+    }
+  }
+
+  for (const route of routes) {
+    const [direction, distanceStr] = route.split(" ");
+    const distance = parseInt(distanceStr);
+    const [dx, dy] = directions[direction];
+
+    let canMove = true;
+
+    for (let step = 1; step <= distance; step++) {
+      const newX = x + dx * step;
+      const newY = y + dy * step;
+
+      if (
+        newX < 0 ||
+        newX >= park.length ||
+        newY < 0 ||
+        newY >= park[0].length ||
+        park[newX][newY] === "X"
+      ) {
+        canMove = false;
+        break;
+      }
+    }
+
+    if (canMove) {
+      x += dx * distance;
+      y += dy * distance;
+    }
+  }
+
+  return [x, y];
+}

From f4bc768a124c98897c550ade69f2935483647b68 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Sat, 18 Jan 2025 16:08:48 +0900
Subject: [PATCH 27/52] =?UTF-8?q?=ED=96=84=EB=B2=84=EA=B1=B0=20=EB=A7=8C?=
 =?UTF-8?q?=EB=93=A4=EA=B8=B0=20/=20=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Making_a_Hamburger.js"                        | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 "oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Making_a_Hamburger.js"

diff --git "a/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Making_a_Hamburger.js" "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Making_a_Hamburger.js"
new file mode 100644
index 0000000..cb2041c
--- /dev/null
+++ "b/oh-chaeyeon/3\354\243\274\354\260\250_\355\201\220/Making_a_Hamburger.js"
@@ -0,0 +1,15 @@
+function solution(ingredient) {
+  const q = [];
+  let count = 0;
+
+  for (const item of ingredient) {
+    q.push(item);
+
+    if (q.length >= 4 && q.slice(-4).join("") === "1231") {
+      q.splice(-4);
+      count++;
+    }
+  }
+
+  return count;
+}

From 5815b69ea06c049428e3488f8deb33be09047cdb Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 27 Jan 2025 21:08:02 +0900
Subject: [PATCH 28/52] =?UTF-8?q?=EB=AA=A8=EC=8A=A4=EB=B6=80=ED=98=B81=20/?=
 =?UTF-8?q?=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...0\354\212\244\353\266\200\355\230\2701.js" | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 "oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\353\252\250\354\212\244\353\266\200\355\230\2701.js"

diff --git "a/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\353\252\250\354\212\244\353\266\200\355\230\2701.js" "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\353\252\250\354\212\244\353\266\200\355\230\2701.js"
new file mode 100644
index 0000000..ed2b352
--- /dev/null
+++ "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\353\252\250\354\212\244\353\266\200\355\230\2701.js"
@@ -0,0 +1,34 @@
+function solution(letter) {
+  const morse = {
+    ".-": "a",
+    "-...": "b",
+    "-.-.": "c",
+    "-..": "d",
+    ".": "e",
+    "..-.": "f",
+    "--.": "g",
+    "....": "h",
+    "..": "i",
+    ".---": "j",
+    "-.-": "k",
+    ".-..": "l",
+    "--": "m",
+    "-.": "n",
+    "---": "o",
+    ".--.": "p",
+    "--.-": "q",
+    ".-.": "r",
+    "...": "s",
+    "-": "t",
+    "..-": "u",
+    "...-": "v",
+    ".--": "w",
+    "-..-": "x",
+    "-.--": "y",
+    "--..": "z",
+  };
+  return letter
+    .split(" ")
+    .map((code) => morse[code])
+    .join("");
+}

From 474e84252a8ddf4d0b4b371a098b05f9bb12738e Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 27 Jan 2025 21:08:24 +0900
Subject: [PATCH 29/52] =?UTF-8?q?A=EB=A1=9C=20B=EB=A7=8C=EB=93=A4=EA=B8=B0?=
 =?UTF-8?q?=20/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../A\353\241\234_B_\353\247\214\353\223\244\352\270\260.js" | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 "oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/A\353\241\234_B_\353\247\214\353\223\244\352\270\260.js"

diff --git "a/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/A\353\241\234_B_\353\247\214\353\223\244\352\270\260.js" "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/A\353\241\234_B_\353\247\214\353\223\244\352\270\260.js"
new file mode 100644
index 0000000..1733e64
--- /dev/null
+++ "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/A\353\241\234_B_\353\247\214\353\223\244\352\270\260.js"
@@ -0,0 +1,5 @@
+function solution(before, after) {
+  return before.split("").sort().join("") === after.split("").sort().join("")
+    ? 1
+    : 0;
+}

From c72670830243478c4691a924a5b27b8817f7266b Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 27 Jan 2025 21:08:39 +0900
Subject: [PATCH 30/52] =?UTF-8?q?=EC=A7=84=EB=A1=9C=20=EC=88=9C=EC=84=9C?=
 =?UTF-8?q?=20=EC=A0=95=ED=95=98=EA=B8=B0=20/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...\234\354\204\234_\354\240\225\355\225\230\352\270\260.js" | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 "oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\247\204\353\241\234_\354\210\234\354\204\234_\354\240\225\355\225\230\352\270\260.js"

diff --git "a/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\247\204\353\241\234_\354\210\234\354\204\234_\354\240\225\355\225\230\352\270\260.js" "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\247\204\353\241\234_\354\210\234\354\204\234_\354\240\225\355\225\230\352\270\260.js"
new file mode 100644
index 0000000..9cf5f17
--- /dev/null
+++ "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\247\204\353\241\234_\354\210\234\354\204\234_\354\240\225\355\225\230\352\270\260.js"
@@ -0,0 +1,5 @@
+function solution(emergency) {
+  return emergency.map(
+    (e) => [...emergency].sort((a, b) => b - a).indexOf(e) + 1
+  );
+}

From e30e7d694da55cde58b8e23f42d5d5978644f9b1 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 27 Jan 2025 21:09:11 +0900
Subject: [PATCH 31/52] =?UTF-8?q?=EB=93=B1=EC=88=98=20=EB=A7=A4=EA=B8=B0?=
 =?UTF-8?q?=EA=B8=B0=20/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...261\354\210\230_\353\247\244\352\270\260\352\270\260.js" | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 "oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\353\223\261\354\210\230_\353\247\244\352\270\260\352\270\260.js"

diff --git "a/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\353\223\261\354\210\230_\353\247\244\352\270\260\352\270\260.js" "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\353\223\261\354\210\230_\353\247\244\352\270\260\352\270\260.js"
new file mode 100644
index 0000000..25ca70a
--- /dev/null
+++ "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\353\223\261\354\210\230_\353\247\244\352\270\260\352\270\260.js"
@@ -0,0 +1,6 @@
+function solution(score) {
+  const averages = score.map((s) => (s[0] + s[1]) / 2);
+  const sortedAverages = [...averages].sort((a, b) => b - a);
+
+  return averages.map((avg) => sortedAverages.indexOf(avg) + 1);
+}

From a8d94b17e77b781a213b563367bd584782e1761a Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 27 Jan 2025 21:09:37 +0900
Subject: [PATCH 32/52] =?UTF-8?q?=EC=99=84=EC=A3=BC=ED=95=98=EC=A7=80=20?=
 =?UTF-8?q?=EB=AA=BB=ED=95=9C=20=EC=84=A0=EC=88=98=20/=20=EC=A4=91?=
 =?UTF-8?q?=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...\252\273\355\225\234_\354\204\240\354\210\230.js" | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 "oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\231\204\354\243\274\355\225\230\354\247\200_\353\252\273\355\225\234_\354\204\240\354\210\230.js"

diff --git "a/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\231\204\354\243\274\355\225\230\354\247\200_\353\252\273\355\225\234_\354\204\240\354\210\230.js" "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\231\204\354\243\274\355\225\230\354\247\200_\353\252\273\355\225\234_\354\204\240\354\210\230.js"
new file mode 100644
index 0000000..2693d05
--- /dev/null
+++ "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\231\204\354\243\274\355\225\230\354\247\200_\353\252\273\355\225\234_\354\204\240\354\210\230.js"
@@ -0,0 +1,12 @@
+function solution(participant, completion) {
+  const count = participant.reduce((acc, name) => {
+    acc[name] = (acc[name] || 0) + 1;
+    return acc;
+  }, {});
+
+  completion.forEach((name) => {
+    count[name]--;
+  });
+
+  return Object.keys(count).find((name) => count[name] > 0);
+}

From e27c3a986ed116764718dcc31f7f99fe07c0343d Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 27 Jan 2025 21:10:03 +0900
Subject: [PATCH 33/52] =?UTF-8?q?=ED=8F=AC=EC=BC=93=EB=AA=AC=20/=20?=
 =?UTF-8?q?=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../\355\217\260\354\274\223\353\252\254.js"                | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 "oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\355\217\260\354\274\223\353\252\254.js"

diff --git "a/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\355\217\260\354\274\223\353\252\254.js" "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\355\217\260\354\274\223\353\252\254.js"
new file mode 100644
index 0000000..ed4042a
--- /dev/null
+++ "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\355\217\260\354\274\223\353\252\254.js"
@@ -0,0 +1,6 @@
+function solution(nums) {
+  const newNum = [...new Set(nums)];
+  const selection = nums.length / 2;
+
+  return Math.min(newNum.length, selection);
+}

From d2301ffc175f28977f010c7380f0dd5eab96c207 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 27 Jan 2025 21:10:24 +0900
Subject: [PATCH 34/52] =?UTF-8?q?=EC=B6=94=EC=96=B5=20=EC=A0=90=EC=88=98?=
 =?UTF-8?q?=20/=20=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../\354\266\224\354\226\265_\354\240\220\354\210\230.js" | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 "oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\266\224\354\226\265_\354\240\220\354\210\230.js"

diff --git "a/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\266\224\354\226\265_\354\240\220\354\210\230.js" "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\266\224\354\226\265_\354\240\220\354\210\230.js"
new file mode 100644
index 0000000..019bd7c
--- /dev/null
+++ "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\266\224\354\226\265_\354\240\220\354\210\230.js"
@@ -0,0 +1,8 @@
+function solution(name, yearning, photo) {
+  return photo.map((p) =>
+    p.reduce((sum, person) => {
+      const index = name.indexOf(person);
+      return sum + (index !== -1 ? yearning[index] : 0);
+    }, 0)
+  );
+}

From 16b93e3af546952e4ae1cbe072c491d9ba7b87c3 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 27 Jan 2025 21:11:02 +0900
Subject: [PATCH 35/52] =?UTF-8?q?=ED=95=A0=EC=9D=B8=20=ED=96=89=EC=82=AC?=
 =?UTF-8?q?=20/=20=EC=8B=AC=ED=99=94?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...0\354\235\270_\355\226\211\354\202\254.js" | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 "oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\355\225\240\354\235\270_\355\226\211\354\202\254.js"

diff --git "a/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\355\225\240\354\235\270_\355\226\211\354\202\254.js" "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\355\225\240\354\235\270_\355\226\211\354\202\254.js"
new file mode 100644
index 0000000..9751c1d
--- /dev/null
+++ "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\355\225\240\354\235\270_\355\226\211\354\202\254.js"
@@ -0,0 +1,24 @@
+function solution(want, number, discount) {
+  const required = {};
+  want.forEach((item, index) => {
+    required[item] = number[index];
+  });
+
+  let day = 0;
+
+  for (let i = 0; i <= discount.length - 10; i++) {
+    const current = {};
+
+    for (let j = i; j < i + 10; j++) {
+      current[discount[j]] = (current[discount[j]] || 0) + 1;
+    }
+
+    const isValid = want.every(
+      (item) => (current[item] || 0) >= required[item]
+    );
+
+    if (isValid) day++;
+  }
+
+  return day;
+}

From 4b3f8ee30fa56e6baeac766f32cea27ae368c577 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 27 Jan 2025 21:11:25 +0900
Subject: [PATCH 36/52] =?UTF-8?q?=20=EC=98=A4=ED=94=88=EC=B1=84=ED=8C=85?=
 =?UTF-8?q?=EB=B0=A9=20/=20=EC=8B=AC=ED=99=94?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...10\354\261\204\355\214\205\353\260\251.js" | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 "oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\230\244\355\224\210\354\261\204\355\214\205\353\260\251.js"

diff --git "a/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\230\244\355\224\210\354\261\204\355\214\205\353\260\251.js" "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\230\244\355\224\210\354\261\204\355\214\205\353\260\251.js"
new file mode 100644
index 0000000..95e6713
--- /dev/null
+++ "b/oh-chaeyeon/4\354\243\274\354\260\250_\355\225\264\354\213\234/\354\230\244\355\224\210\354\261\204\355\214\205\353\260\251.js"
@@ -0,0 +1,22 @@
+function solution(record) {
+  const nicknames = {};
+  const result = [];
+
+  record.forEach((entry) => {
+    const [action, userId, nickname] = entry.split(" ");
+    if (action !== "Leave") {
+      nicknames[userId] = nickname;
+    }
+  });
+
+  record.forEach((entry) => {
+    const [action, userId] = entry.split(" ");
+    if (action === "Enter") {
+      result.push(`${nicknames[userId]}님이 들어왔습니다.`);
+    } else if (action === "Leave") {
+      result.push(`${nicknames[userId]}님이 나갔습니다.`);
+    }
+  });
+
+  return result;
+}

From eba0569a7e00ec4a0206ed2894a286409945a186 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 10 Feb 2025 17:24:41 +0900
Subject: [PATCH 37/52] =?UTF-8?q?Maximum=20Depth=20of=20Binary=20Tree=20/?=
 =?UTF-8?q?=20=EC=B4=88=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Maximum_Depth_of_Binary_Tree.js"          | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 "oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Maximum_Depth_of_Binary_Tree.js"

diff --git "a/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Maximum_Depth_of_Binary_Tree.js" "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Maximum_Depth_of_Binary_Tree.js"
new file mode 100644
index 0000000..e676b5c
--- /dev/null
+++ "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Maximum_Depth_of_Binary_Tree.js"
@@ -0,0 +1,22 @@
+/**
+ * Definition for a binary tree node.
+ * function TreeNode(val, left, right) {
+ *     this.val = (val===undefined ? 0 : val)
+ *     this.left = (left===undefined ? null : left)
+ *     this.right = (right===undefined ? null : right)
+ * }
+ */
+/**
+ * @param {TreeNode} root
+ * @return {number}
+ */
+var maxDepth = function (root) {
+  if (root === null) {
+    return 0;
+  }
+
+  let leftDepth = maxDepth(root.left);
+  let rightDepth = maxDepth(root.right);
+
+  return Math.max(leftDepth, rightDepth) + 1;
+};

From d4d18404650fcb5d3c6414912084e8826148feec Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 10 Feb 2025 17:24:59 +0900
Subject: [PATCH 38/52] =?UTF-8?q?Binary=20Tree=20Inorder=20Traversal=20/?=
 =?UTF-8?q?=20=EC=B4=88=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Binary_Tree_Inorder_Traversal.js"         | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 "oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Binary_Tree_Inorder_Traversal.js"

diff --git "a/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Binary_Tree_Inorder_Traversal.js" "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Binary_Tree_Inorder_Traversal.js"
new file mode 100644
index 0000000..57bec16
--- /dev/null
+++ "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Binary_Tree_Inorder_Traversal.js"
@@ -0,0 +1,23 @@
+/**
+ * Definition for a binary tree node.
+ * function TreeNode(val, left, right) {
+ *     this.val = (val===undefined ? 0 : val)
+ *     this.left = (left===undefined ? null : left)
+ *     this.right = (right===undefined ? null : right)
+ * }
+ */
+/**
+ * @param {TreeNode} root
+ * @return {number[]}
+ */
+var inorderTraversal = function (root) {
+  const result = [];
+  function traverse(node) {
+    if (!node) return;
+    traverse(node.left);
+    result.push(node.val);
+    traverse(node.right);
+  }
+  traverse(root);
+  return result;
+};

From 1602133cb99f6875fd27d5a7bec99dacfde451cc Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 10 Feb 2025 17:25:15 +0900
Subject: [PATCH 39/52] =?UTF-8?q?Same=20Tree=20/=20=EC=B4=88=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Same_Tree.js"                             | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 "oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Same_Tree.js"

diff --git "a/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Same_Tree.js" "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Same_Tree.js"
new file mode 100644
index 0000000..37b5b14
--- /dev/null
+++ "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Same_Tree.js"
@@ -0,0 +1,28 @@
+/**
+ * Definition for a binary tree node.
+ * function TreeNode(val, left, right) {
+ *     this.val = (val===undefined ? 0 : val)
+ *     this.left = (left===undefined ? null : left)
+ *     this.right = (right===undefined ? null : right)
+ * }
+ */
+/**
+ * @param {TreeNode} p
+ * @param {TreeNode} q
+ * @return {boolean}
+ */
+var isSameTree = function (p, q) {
+  if (p === null && q === null) {
+    return true;
+  }
+
+  if (p === null || q === null) {
+    return false;
+  }
+
+  if (p.val !== q.val) {
+    return false;
+  }
+
+  return isSameTree(p.left, q.left) && isSameTree(p.right, q.right);
+};

From 648f832d0dd494354162b1f08d0218d5629b5f86 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 10 Feb 2025 17:25:46 +0900
Subject: [PATCH 40/52] =?UTF-8?q?Invert=20Binary=20Tree=20/=20=EC=B4=88?=
 =?UTF-8?q?=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Invert_Binary_Tree.js"                    | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 "oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Invert_Binary_Tree.js"

diff --git "a/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Invert_Binary_Tree.js" "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Invert_Binary_Tree.js"
new file mode 100644
index 0000000..9cff07e
--- /dev/null
+++ "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Invert_Binary_Tree.js"
@@ -0,0 +1,26 @@
+/**
+ * Definition for a binary tree node.
+ * function TreeNode(val, left, right) {
+ *     this.val = (val===undefined ? 0 : val)
+ *     this.left = (left===undefined ? null : left)
+ *     this.right = (right===undefined ? null : right)
+ * }
+ */
+/**
+ * @param {TreeNode} root
+ * @return {TreeNode}
+ */
+var invertTree = function (root) {
+  if (root === null) {
+    return null;
+  }
+
+  let temp = root.left;
+  root.left = root.right;
+  root.right = temp;
+
+  invertTree(root.left);
+  invertTree(root.right);
+
+  return root;
+};

From 94cfe6d1f3332324901945d4afc67041abe4624b Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 10 Feb 2025 17:27:49 +0900
Subject: [PATCH 41/52] =?UTF-8?q?Binary=20Tree=20Level=20Order=20Traversal?=
 =?UTF-8?q?=20/=20=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Binary_Tree_Level_Order_Traversal.js"     | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 "oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Binary_Tree_Level_Order_Traversal.js"

diff --git "a/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Binary_Tree_Level_Order_Traversal.js" "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Binary_Tree_Level_Order_Traversal.js"
new file mode 100644
index 0000000..b0c7905
--- /dev/null
+++ "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Binary_Tree_Level_Order_Traversal.js"
@@ -0,0 +1,26 @@
+/**
+ * Definition for a binary tree node.
+ * function TreeNode(val, left, right) {
+ *     this.val = (val===undefined ? 0 : val)
+ *     this.left = (left===undefined ? null : left)
+ *     this.right = (right===undefined ? null : right)
+ * }
+ */
+/**
+ * @param {TreeNode} root
+ * @return {number[][]}
+ */
+var levelOrder = function (root) {
+  const result = [];
+
+  function traverse(node, level) {
+    if (!node) return;
+    if (!result[level]) result[level] = [];
+    result[level].push(node.val);
+    traverse(node.left, level + 1);
+    traverse(node.right, level + 1);
+  }
+
+  traverse(root, 0);
+  return result;
+};

From 98fa4504e1778737a3e41716399d98f0a3ac7fe8 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 10 Feb 2025 17:28:00 +0900
Subject: [PATCH 42/52] =?UTF-8?q?Validate=20Binary=20Search=20Tree=20/=20?=
 =?UTF-8?q?=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Validate_Binary_Search_Tree.js"           | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 "oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Validate_Binary_Search_Tree.js"

diff --git "a/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Validate_Binary_Search_Tree.js" "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Validate_Binary_Search_Tree.js"
new file mode 100644
index 0000000..8639543
--- /dev/null
+++ "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Validate_Binary_Search_Tree.js"
@@ -0,0 +1,24 @@
+/**
+ * Definition for a binary tree node.
+ * function TreeNode(val, left, right) {
+ *     this.val = (val===undefined ? 0 : val)
+ *     this.left = (left===undefined ? null : left)
+ *     this.right = (right===undefined ? null : right)
+ * }
+ */
+/**
+ * @param {TreeNode} root
+ * @return {boolean}
+ */
+var isValidBST = function (root) {
+  function validate(node, lower, upper) {
+    if (!node) return true;
+
+    const val = node.val;
+    if (val <= lower || val >= upper) return false;
+
+    return validate(node.left, lower, val) && validate(node.right, val, upper);
+  }
+
+  return validate(root, -Infinity, Infinity);
+};

From c2ef4b360c0d3712cd2ff2a244147be7267d33f6 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 10 Feb 2025 17:28:13 +0900
Subject: [PATCH 43/52] =?UTF-8?q?Construct=20Binary=20Tree=20from=20Preord?=
 =?UTF-8?q?er=20and=20Inorder=20Traversal=20/=20=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...ee_from_Preorder_and_Inorder_Traversal.js" | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 "oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Construct_Binary_Tree_from_Preorder_and_Inorder_Traversal.js"

diff --git "a/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Construct_Binary_Tree_from_Preorder_and_Inorder_Traversal.js" "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Construct_Binary_Tree_from_Preorder_and_Inorder_Traversal.js"
new file mode 100644
index 0000000..50b3860
--- /dev/null
+++ "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Construct_Binary_Tree_from_Preorder_and_Inorder_Traversal.js"
@@ -0,0 +1,38 @@
+/**
+ * Definition for a binary tree node.
+ * function TreeNode(val, left, right) {
+ *     this.val = (val===undefined ? 0 : val)
+ *     this.left = (left===undefined ? null : left)
+ *     this.right = (right===undefined ? null : right)
+ * }
+ */
+/**
+ * @param {number[]} preorder
+ * @param {number[]} inorder
+ * @return {TreeNode}
+ */
+var buildTree = function (preorder, inorder) {
+  const inorderMap = new Map();
+  inorder.forEach((val, idx) => inorderMap.set(val, idx));
+
+  function build(preStart, preEnd, inStart, inEnd) {
+    if (preStart > preEnd || inStart > inEnd) return null;
+
+    const rootVal = preorder[preStart];
+    const root = new TreeNode(rootVal);
+    const inRootIndex = inorderMap.get(rootVal);
+    const leftSize = inRootIndex - inStart;
+
+    root.left = build(
+      preStart + 1,
+      preStart + leftSize,
+      inStart,
+      inRootIndex - 1
+    );
+    root.right = build(preStart + leftSize + 1, preEnd, inRootIndex + 1, inEnd);
+
+    return root;
+  }
+
+  return build(0, preorder.length - 1, 0, inorder.length - 1);
+};

From 8228c60b9a0727d8067ff41bce5f24e933f9d140 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 10 Feb 2025 17:29:42 +0900
Subject: [PATCH 44/52] =?UTF-8?q?=EC=9D=B4=EC=A7=84=20=EB=B3=80=ED=99=98?=
 =?UTF-8?q?=20=EB=B0=98=EB=B3=B5=ED=95=98=EA=B8=B0=20/=20=EC=8B=AC?=
 =?UTF-8?q?=ED=99=94?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...\230\353\263\265\355\225\230\352\270\260.js" | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 "oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/\354\235\264\354\247\204_\353\263\200\355\231\230_\353\260\230\353\263\265\355\225\230\352\270\260.js"

diff --git "a/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/\354\235\264\354\247\204_\353\263\200\355\231\230_\353\260\230\353\263\265\355\225\230\352\270\260.js" "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/\354\235\264\354\247\204_\353\263\200\355\231\230_\353\260\230\353\263\265\355\225\230\352\270\260.js"
new file mode 100644
index 0000000..bb632c8
--- /dev/null
+++ "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/\354\235\264\354\247\204_\353\263\200\355\231\230_\353\260\230\353\263\265\355\225\230\352\270\260.js"
@@ -0,0 +1,17 @@
+function solution(s) {
+  let count = 0;
+  let removed = 0;
+
+  while (s !== "1") {
+    const originalLength = s.length;
+    const newStr = s
+      .split("")
+      .filter((char) => char === "1")
+      .join("");
+    removed += originalLength - newStr.length;
+    s = newStr.length.toString(2);
+    count++;
+  }
+
+  return [count, removed];
+}

From de828daa95df50b93b9749a40b125da08430151f Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Mon, 10 Feb 2025 17:30:02 +0900
Subject: [PATCH 45/52] =?UTF-8?q?Binary=20Tree=20Maximum=20Path=20Sum=20/?=
 =?UTF-8?q?=20=EC=8B=AC=ED=99=94?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Binary_Tree_Maximum_Path_Sum.js"          | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 "oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Binary_Tree_Maximum_Path_Sum.js"

diff --git "a/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Binary_Tree_Maximum_Path_Sum.js" "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Binary_Tree_Maximum_Path_Sum.js"
new file mode 100644
index 0000000..12f7554
--- /dev/null
+++ "b/oh-chaeyeon/5\354\243\274\354\260\250_\355\212\270\353\246\254/Binary_Tree_Maximum_Path_Sum.js"
@@ -0,0 +1,31 @@
+/**
+ * Definition for a binary tree node.
+ * function TreeNode(val, left, right) {
+ *     this.val = (val===undefined ? 0 : val)
+ *     this.left = (left===undefined ? null : left)
+ *     this.right = (right===undefined ? null : right)
+ * }
+ */
+/**
+ * @param {TreeNode} root
+ * @return {number}
+ */
+var maxPathSum = function (root) {
+  let maxSum = -Infinity;
+
+  function dfs(node) {
+    if (!node) return 0;
+
+    const left = Math.max(dfs(node.left), 0);
+    const right = Math.max(dfs(node.right), 0);
+
+    const currentSum = node.val + left + right;
+
+    maxSum = Math.max(maxSum, currentSum);
+
+    return node.val + Math.max(left, right);
+  }
+
+  dfs(root);
+  return maxSum;
+};

From 7817495332bbc291f73318e567a924b0e2e0951a Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 20 Feb 2025 21:13:41 +0900
Subject: [PATCH 46/52] =?UTF-8?q?Find=20the=20Town=20Judge=20/=20=EA=B8=B0?=
 =?UTF-8?q?=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Find_the_Town_Judge.js"                   | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 "oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/Find_the_Town_Judge.js"

diff --git "a/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/Find_the_Town_Judge.js" "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/Find_the_Town_Judge.js"
new file mode 100644
index 0000000..27f697c
--- /dev/null
+++ "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/Find_the_Town_Judge.js"
@@ -0,0 +1,21 @@
+/**
+ * @param {number} n
+ * @param {number[][]} trust
+ * @return {number}
+ */
+var findJudge = function (n, trust) {
+  const trustCount = new Array(n + 1).fill(0);
+
+  for (const [a, b] of trust) {
+    trustCount[a]--;
+    trustCount[b]++;
+  }
+
+  for (let i = 1; i <= n; i++) {
+    if (trustCount[i] === n - 1) {
+      return i;
+    }
+  }
+
+  return -1;
+};

From 8dcfb92d66fdd9ad9f12bf9412e8293124a35730 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 20 Feb 2025 21:13:54 +0900
Subject: [PATCH 47/52] =?UTF-8?q?Find=20if=20Path=20Exists=20in=20Graph=20?=
 =?UTF-8?q?/=20=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Find_if_Path_Exists_in_Graph.js"          | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 "oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/Find_if_Path_Exists_in_Graph.js"

diff --git "a/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/Find_if_Path_Exists_in_Graph.js" "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/Find_if_Path_Exists_in_Graph.js"
new file mode 100644
index 0000000..f7c4fea
--- /dev/null
+++ "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/Find_if_Path_Exists_in_Graph.js"
@@ -0,0 +1,32 @@
+/**
+ * @param {number} n
+ * @param {number[][]} edges
+ * @param {number} source
+ * @param {number} destination
+ * @return {boolean}
+ */
+var validPath = function (n, edges, source, destination) {
+  const graph = Array.from({ length: n }, () => []);
+
+  edges.forEach(([u, v]) => {
+    graph[u].push(v);
+    graph[v].push(u);
+  });
+
+  const visited = new Set();
+
+  const dfs = (node) => {
+    if (node === destination) return true;
+    visited.add(node);
+
+    for (const neighbor of graph[node]) {
+      if (!visited.has(neighbor) && dfs(neighbor)) {
+        return true;
+      }
+    }
+
+    return false;
+  };
+
+  return dfs(source);
+};

From 4cf5fdf6adcae52392ca81aabd0aa6ab7672df67 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 20 Feb 2025 21:15:04 +0900
Subject: [PATCH 48/52] =?UTF-8?q?Find=20Center=20of=20Star=20Graph=20/=20?=
 =?UTF-8?q?=EA=B8=B0=EC=B4=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Find_Center_of_Star_Graph.js"                        | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 "oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/Find_Center_of_Star_Graph.js"

diff --git "a/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/Find_Center_of_Star_Graph.js" "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/Find_Center_of_Star_Graph.js"
new file mode 100644
index 0000000..6841e5c
--- /dev/null
+++ "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/Find_Center_of_Star_Graph.js"
@@ -0,0 +1,9 @@
+/**
+ * @param {number[][]} edges
+ * @return {number}
+ */
+var findCenter = function (edges) {
+  return edges[0][0] === edges[1][0] || edges[0][0] === edges[1][1]
+    ? edges[0][0]
+    : edges[0][1];
+};

From 9f47b9b71a3e3d91d709d0faca997962bfef4aad Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 20 Feb 2025 21:15:20 +0900
Subject: [PATCH 49/52] =?UTF-8?q?=EA=B2=8C=EC=9E=84=20=EB=A7=B5=20?=
 =?UTF-8?q?=EC=B5=9C=EB=8B=A8=EA=B1=B0=EB=A6=AC=20/=20=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...34\353\213\250\352\261\260\353\246\254.js" | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 "oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\352\262\214\354\236\204_\353\247\265_\354\265\234\353\213\250\352\261\260\353\246\254.js"

diff --git "a/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\352\262\214\354\236\204_\353\247\265_\354\265\234\353\213\250\352\261\260\353\246\254.js" "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\352\262\214\354\236\204_\353\247\265_\354\265\234\353\213\250\352\261\260\353\246\254.js"
new file mode 100644
index 0000000..e702c95
--- /dev/null
+++ "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\352\262\214\354\236\204_\353\247\265_\354\265\234\353\213\250\352\261\260\353\246\254.js"
@@ -0,0 +1,45 @@
+function solution(maps) {
+  const n = maps.length;
+  const m = maps[0].length;
+  const directions = [
+    [1, 0],
+    [-1, 0],
+    [0, 1],
+    [0, -1],
+  ];
+  const queue = [[0, 0]];
+  const visited = Array.from({ length: n }, () => Array(m).fill(false));
+  visited[0][0] = true;
+  let count = 1;
+
+  while (queue.length > 0) {
+    const size = queue.length;
+    for (let i = 0; i < size; i++) {
+      const [x, y] = queue.shift();
+
+      if (x === n - 1 && y === m - 1) {
+        return count;
+      }
+
+      for (const [dx, dy] of directions) {
+        const nx = x + dx;
+        const ny = y + dy;
+
+        if (
+          nx >= 0 &&
+          ny >= 0 &&
+          nx < n &&
+          ny < m &&
+          maps[nx][ny] === 1 &&
+          !visited[nx][ny]
+        ) {
+          visited[nx][ny] = true;
+          queue.push([nx, ny]);
+        }
+      }
+    }
+    count++;
+  }
+
+  return -1;
+}

From ddfb81f6f4e9a860eb856f584091fb6a65e6c11e Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 20 Feb 2025 21:15:35 +0900
Subject: [PATCH 50/52] =?UTF-8?q?=ED=83=80=EA=B2=9F=20=EB=84=98=EB=B2=84?=
 =?UTF-8?q?=20/=20=EC=A4=91=EA=B8=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...00\354\274\223_\353\204\230\353\262\204.js" | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 "oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\355\203\200\354\274\223_\353\204\230\353\262\204.js"

diff --git "a/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\355\203\200\354\274\223_\353\204\230\353\262\204.js" "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\355\203\200\354\274\223_\353\204\230\353\262\204.js"
new file mode 100644
index 0000000..2496c77
--- /dev/null
+++ "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\355\203\200\354\274\223_\353\204\230\353\262\204.js"
@@ -0,0 +1,18 @@
+function solution(numbers, target) {
+  const dp = new Map();
+  dp.set(0, 1);
+
+  for (const number of numbers) {
+    const nextDp = new Map();
+    for (const [sum, count] of dp) {
+      nextDp.set(sum + number, (nextDp.get(sum + number) || 0) + count);
+      nextDp.set(sum - number, (nextDp.get(sum - number) || 0) + count);
+    }
+    dp.clear();
+    for (const [sum, count] of nextDp) {
+      dp.set(sum, count);
+    }
+  }
+
+  return dp.get(target) || 0;
+}

From 0016a9af5c555f4bd9575cb546d8dbbe7e731ace Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 20 Feb 2025 21:15:49 +0900
Subject: [PATCH 51/52] =?UTF-8?q?=EC=A0=84=EB=A0=A5=EB=A7=9D=EC=9D=84=20?=
 =?UTF-8?q?=EB=91=98=EB=A1=9C=20=EB=82=98=EB=88=84=EA=B8=B0=20/=20?=
 =?UTF-8?q?=EC=8B=AC=ED=99=94?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...4_\353\202\230\353\210\204\352\270\260.js" | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 "oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\354\240\204\353\240\245\353\247\235\354\235\204_\353\217\214\353\241\234_\353\202\230\353\210\204\352\270\260.js"

diff --git "a/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\354\240\204\353\240\245\353\247\235\354\235\204_\353\217\214\353\241\234_\353\202\230\353\210\204\352\270\260.js" "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\354\240\204\353\240\245\353\247\235\354\235\204_\353\217\214\353\241\234_\353\202\230\353\210\204\352\270\260.js"
new file mode 100644
index 0000000..4b26735
--- /dev/null
+++ "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\354\240\204\353\240\245\353\247\235\354\235\204_\353\217\214\353\241\234_\353\202\230\353\210\204\352\270\260.js"
@@ -0,0 +1,33 @@
+function solution(n, wires) {
+  const graph = Array.from({ length: n + 1 }, () => []);
+
+  for (const [v1, v2] of wires) {
+    graph[v1].push(v2);
+    graph[v2].push(v1);
+  }
+
+  let minDifference = Number.MAX_VALUE;
+
+  const dfs = (node, visited) => {
+    let count = 1;
+    visited[node] = true;
+
+    for (const neighbor of graph[node]) {
+      if (!visited[neighbor]) {
+        count += dfs(neighbor, visited);
+      }
+    }
+
+    return count;
+  };
+
+  for (const [v1, v2] of wires) {
+    const visited = Array(n + 1).fill(false);
+    visited[v1] = true;
+    const count = dfs(v2, visited);
+    const difference = Math.abs(count - (n - count));
+    minDifference = Math.min(minDifference, difference);
+  }
+
+  return minDifference;
+}

From 4e37e37110f2b559050a1197781298f6f96cdc55 Mon Sep 17 00:00:00 2001
From: oh-chaeyeon <chaebread555@gmail.com>
Date: Thu, 20 Feb 2025 21:15:58 +0900
Subject: [PATCH 52/52] =?UTF-8?q?=EB=B0=B0=EB=8B=AC=20/=20=EC=8B=AC?=
 =?UTF-8?q?=ED=99=94?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../\353\260\260\353\213\254.js"              | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 "oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\353\260\260\353\213\254.js"

diff --git "a/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\353\260\260\353\213\254.js" "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\353\260\260\353\213\254.js"
new file mode 100644
index 0000000..01a4c65
--- /dev/null
+++ "b/oh-chaeyeon/7\354\243\274\354\260\250_\352\267\270\353\236\230\355\224\204/\353\260\260\353\213\254.js"
@@ -0,0 +1,31 @@
+function solution(N, road, K) {
+  const graph = Array.from({ length: N + 1 }, () => []);
+
+  for (const [a, b, c] of road) {
+    graph[a].push([b, c]);
+    graph[b].push([a, c]);
+  }
+
+  const distances = Array(N + 1).fill(Infinity);
+  distances[1] = 0;
+  const priorityQueue = [[0, 1]];
+
+  while (priorityQueue.length > 0) {
+    const [currentDistance, currentNode] = priorityQueue.shift();
+
+    if (currentDistance > distances[currentNode]) {
+      continue;
+    }
+
+    for (const [neighbor, time] of graph[currentNode]) {
+      const newDistance = currentDistance + time;
+      if (newDistance < distances[neighbor]) {
+        distances[neighbor] = newDistance;
+        priorityQueue.push([newDistance, neighbor]);
+        priorityQueue.sort((a, b) => a[0] - b[0]);
+      }
+    }
+  }
+
+  return distances.filter((distance) => distance <= K).length;
+}