编辑代码

package main
import "fmt"
func main () {
    fmt.Println(twoSum([]int{1, 2, 4, 7, 10 ,15}, 9))
}

func twoSum(nums []int, target int) []int {
    m := make(map[int]int)
    for i := 0; i < len(nums); i++ {
        //fmt.Println(i, nums[i], m)
        another := target - nums[i]
        if _, ok := m[another]; ok {
            return []int{m[another], i}
        }
        m[nums[i]] = i
    }
    return nil
}