행렬의 곱셈 / 심화

Author: jiyeeeah

jiyeeeah/[week1]Array/procession_multiply.js

@@ -0,0 +1,18 @@
+function solution(arr1, arr2) {
+  const r1 = arr1.length;
+  const c1 = arr1[0].length;
+  const r2 = arr2.length;
+  const c2 = arr2[0].length;
+  // c1 === r2임
+
+  const answer = new Array(r1).fill(0).map(() => new Array(c2).fill(0));
+
+  for (let i = 0; i < r1; i++) {
+    for (let j = 0; j < c2; j++) {
+      for (let k = 0; k < c1; k++) {
+        answer[i][j] += arr1[i][k] * arr2[k][j];
+      }
+    }
+  }
+  return answer;
+}