小黑开组会呢的leetcode之旅:剑指 Offer 57. 和为s的两个数字

小黑代码(java)

class Solution {
    public int[] twoSum(int[] nums, int target) {
        int[] arr = new int[]{-1,-1};
        int before = 0;
        int after = nums.length - 1;
        while(before != after){
            int num = nums[before] + nums[after];
            if(num > target){
                after--;
            }else if(num < target){
                before++;
            }else{
                arr[0] = nums[before];
                arr[1] = nums[after];
                // System.out.println(arr[0]+"  "+arr[1]+' '+num+' '+target);
                break;
            }
        }
        return arr;

    }
}
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小黑代码(python)

class Solution:
    def twoSum(self, nums: List[int], target: int) -> List[int]:
        n = len(nums)
        start = 0
        end = n -1
        while start != end:
            if nums[start] + nums[end] < target:
                start += 1
            elif nums[start] + nums[end] > target:
                end -= 1
            else:
                return [nums[start],nums[end]]
        return []
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