LeetCode每天刷day1:Two Sum

版权声明：本文为博主原创文章，未经博主允许可以转载。（转呀转呀/笑哭），希望标注出处hhh https://blog.csdn.net/qq_36428171/article/details/88584950

题目链接：Two Sum

C++语言:

class Solution {
public:
    vector<int> twoSum(vector<int>& nums, int target) {
        vector<int> twoSum;
        int lenNums = nums.size();
        for(int i = 0;i < lenNums; i++){
            for(int j = i + 1; j<lenNums; j++){
                if((nums[i] + nums[j]) == target){
                    twoSum.push_back(i);
                    twoSum.push_back(j);
                }
            }
        }
    return twoSum;
    }
};

时间复杂度O(n*n)