two-sum solution

Author: 이호찬

two-sum/lhc0506.js

@@ -0,0 +1,18 @@
+/**
+ * @param {number[]} nums
+ * @param {number} target
+ * @return {number[]}
+ */
+var twoSum = function(nums, target) {
+    const numsMap = {};
+
+    for (let i = 0; i < nums.length; i++) {
+        const needNum = target - nums[i];
+
+        if (needNum in numsMap) {
+            return [i, numsMap[needNum]];
+        }
+
+        numsMap[nums[i]] = i;
+    }
+};