top-k-frequent-elements solution

Author: Jeehay28

top-k-frequent-elements/Jeehay28.js

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+/**
+ * @param {number[]} nums
+ * @param {number} k
+ * @return {number[]}
+ */
+var topKFrequent = function (nums, k) {
+  let result = [];
+
+  const obj = nums.reduce((acc, cur) => {
+    acc[cur] = (acc[cur] || 0) + 1;
+    return acc;
+  }, {});
+
+  const frequentValues = Object.values(obj)
+    .sort((a, b) => b - a)
+    .slice(0, k);
+
+  for (const [key, value] of Object.entries(obj)) {
+    if (frequentValues.includes(value)) {
+      result.push(parseInt(key));
+    }
+  }
+
+  return result;
+};