1-two-sum.go

/*
 * @lc app=leetcode id=1 lang=golang
 *
 * [1] Two Sum
 */

// @lc code=start
func twoSum(nums []int, target int) []int {
	m := make(map[int]int)
	for index, val := range nums {
		if preIndex, ok := m[target-val]; ok {
			return []int{preIndex, index}
		} else {
            m[val] = index
        }
	}
	return []int{}
}
// @lc code=end