Merge pull request neetcode-gh#1483 from aadil42/patch-19

Create 169-majority-element.js

Author: Ahmad-A0

javascript/169-majority-element.js

@@ -0,0 +1,20 @@
+//  problem link https://leetcode.com/problems/majority-element
+// time complexity O(n)
+
+var majorityElement = function(nums) {
+    
+    const occuranceOfElement = new Map();
+    for(let i = 0; i < nums.length; i++) {
+        if(occuranceOfElement.has(nums[i])) {
+            let occurance = occuranceOfElement.get(nums[i]);
+            occuranceOfElement.set(nums[i], occurance+1);
+        } else {
+            occuranceOfElement.set(nums[i], 1);
+        }
+    }
+
+    for(let [key,value] of occuranceOfElement) {
+        if(value > nums.length / 2) return key;
+    }
+
+};