stloztoeplitz的博客

双指针法class Solution { public: vector<vector<int> > threeSum(vector<int> &num) { sort(num.begin(),num.end()); int len = num.size(); vector<vector<int>> ans; vector<int

class Solution { public: vector<vector<int> > fourSum(vector<int> &num, int target) { vector<vector<int> > ans; vector<int> tmp; sort(num.begin(),num.end()); int len