📝 Solved: #217

Author: jangwonyoon

contains-duplicate/jangwonyoon.js

@@ -0,0 +1,19 @@
+/**
+ * @param {number[]} nums
+ * @return {boolean}
+ */
+var containsDuplicate = function(nums) {
+    const sortedNums = nums.sort((a, b) => a - b);
+    const length = sortedNums.length - 1;
+
+    for (let i = 0; i < length; i++) {
+        const left = nums[i];
+        const right = nums[i + 1];
+
+        if (left === right) {
+            return true;
+        }
+    }
+
+    return false;
+};