两数之和

class Solution {
public:
    vector<int> twoSum(vector<int>& nums, int target) {
        vector<int> vec;
        map<int,int> map;
        for(int i=0;i<nums.size();i++)
        {
          int other=target-nums[i];
          if(map.find(other)!=map.end())
            {
                vec.push_back(map[other]);
                vec.push_back(i);
                break;
            }
           map[nums[i]]=i;
        }
        return vec;
    }
};