167. 两数之和 II - 输入有序数组

有序数组 设置双指针 来回移动位置

package main
import "fmt"
func twoSum(numbers []int, target int) []int {
     l :=0
     r :=len(numbers)-1
     for l<=r{
         res := numbers[l]+numbers[r]
         if res==target{
             return []int{l+1,r+1}
        }else if res>target  {
            r--
        }else {
            l++
        }
     }
     return nil
}
func main() {
    fmt.Println(twoSum([]int{2, 7, 11, 15},9))
}