solve(w01): 1. Two Sum

Author: jeongwoo903

two-sum/jeongwoo903.js

@@ -0,0 +1,20 @@
+/**
+ * @param {number[]} nums
+ * @param {number} target
+ * @return {number[]}
+ */
+var twoSum = function(nums, target) {
+    const numMap = new Map();
+
+    for (let i= 0 ; i < nums.length ; i++ ) {
+        let complement = target - nums[i];
+
+        if (numMap.has(complement)) {
+            return [numMap.get(complement), i];
+        }
+
+        numMap.set(nums[i], i);
+    }
+
+    return [];
+};