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