[구문영] Week1 문제 풀이

Author: mykoo

contains-duplicate/GUMUNYEONG.js

@@ -0,0 +1,14 @@
+/**
+ * @param {number[]} nums
+ * @return {boolean}
+ */
+var containsDuplicate = function (nums) {
+    const setObj = new Set(nums);
+
+    const diff = !(nums.length === setObj.size);
+
+    return diff;
+};
+
+// TC: O(n)
+// SC: O(n)