feat: top-k-frequent-elements solution

Author: YeomChaeeun

top-k-frequent-elements/YeomChaeeun.ts

@@ -0,0 +1,29 @@
+/**
+ *
+ * @param nums
+ * @param k
+ */
+function topKFrequent(nums: number[], k: number): number[] {
+    let obj = {}
+
+    for(const num of nums) {
+        if(!obj[num])
+            obj[num] = 0
+        ++obj[num]
+    }
+
+    // 배열로 변경
+    let entries = Object.entries(obj)
+    // 정렬
+    let sort_arr = entries.sort((a, b) => Number(b[1]) - Number(a[1]));
+
+    let result = [];
+    let l = 0;
+    for(const item of sort_arr) {
+        if(l == k) break;
+        result.push(Number(item[0]));
+        l++;
+    }
+
+    return result;
+};