GUMUNYEONG.js : top-k-frequent-elements solution

Author: mykoo

top-k-frequent-elements/GUMUNYEONG.js

@@ -0,0 +1,22 @@
+/**
+ * @param {number[]} nums
+ * @param {number} k
+ * @return {number[]}
+ */
+var topKFrequent = function (nums, k) {
+    let result = [];
+    let fObj = {};
+
+    for (let i = 0; i < nums.length; i++) {
+        const n = nums[i];
+        fObj[n] ? fObj[n]++ : fObj[n] = 1;
+    }
+
+    Object
+        .entries(fObj)
+        .sort((a, b) => b[1] - a[1])
+        .slice(0, k)
+        .filter(v => result.push(v[0]));
+
+    return result;
+};