two sum solution

Author: ccn-lee-dayoung

two-sum/youngDaLee.go

@@ -0,0 +1,14 @@
+package youngDaLee
+
+func twoSum(nums []int, target int) []int {
+	numMap := make(map[int]int)
+	for i, num := range nums {
+		sub := target - num
+		if j, exists := numMap[sub]; exists {
+			return []int{j, i}
+		}
+		numMap[num] = i
+	}
+
+	return []int{}
+}