Updating exercises

src/exercises/347.top-k-frequent-elements.js

@@ -0,0 +1,30 @@
+// @leet start
+/**
+ * @param {number[]} nums
+ * @param {number} k
+ * @return {number[]}
+ */
+var topKFrequent = function(nums, k) {
+    const setOfNumbers = {};
+    for (const num of nums) {
+        if (!setOfNumbers[num]) {
+            setOfNumbers[num] = 1;
+        } else {
+            setOfNumbers[num] = setOfNumbers[num] + 1;
+        }
+    }
+    const values = Object.values(setOfNumbers);
+    const keys = Object.keys(setOfNumbers);
+    let newArray = [];
+
+    for (let i = 0; i < keys.length; i++) {
+        newArray.push([keys[i], values[i]]);
+    }
+    newArray = newArray.sort((a, b) => {
+        return b[1] - a[1];
+    });
+    newArray = newArray.slice(0, k);
+    newArray = newArray.map((a) => Number(a[0]));
+    return newArray;
+};
+// @leet end