leetcode 167 两数之和2，输入有序数组

解题思路：双指针碰撞

class Solution {    public int[] twoSum(int[] numbers, int target) {        int len = numbers.length;        int start = 0;        int end = len - 1;        while(start
     
      target){                --end;            }else if(numbers[start]+numbers[end]