top k frequent elents solution

Author: wooseok123

top-k-frequent-elements/wooseok123.js

@@ -0,0 +1,15 @@
+// TC : o(n log n) | SC : o(n)
+
+var topKFrequent = function (nums, k) {
+  const elements = countElments(nums);
+  const keys = Object.keys(elements).sort((a, b) => elements[b] - elements[a]);
+  return keys.slice(0, k);
+};
+
+let countElments = (nums) => {
+  const temp = {};
+  for (const num of nums) {
+    temp[num] = (count[num] || 0) + 1;
+  }
+  return temp;
+};