剑指offer-和为S的两个数字

import java.util.ArrayList;
public class Solution {
    public ArrayList<Integer> FindNumbersWithSum(int [] array,int sum) {
        ArrayList<Integer> list = new ArrayList<>();
        //左右边界
        int left  = 0;
        int right = array.length -1;
        while(left < right){
            if(array[left] + array[right]> sum){
                right--;
            }else if(array[left] + array[right] < sum){
                left++;
            }else{
                list.add(array[left]);
                list.add(array[right]);
                break;
            }
        }
        return list;
    }
}