两数之和

class Solution {
public:
    /*
     * @param numbers : An array of Integer
     * @param target : target = numbers[index1] + numbers[index2]
     * @return : [index1+1, index2+1] (index1 < index2)
     */
    vector<int> twoSum(vector<int> &nums, int target) 
    {
     // sort(nums.begin(),nums.end());
      int k=nums.size();
      int i,j;
      bool f=0;
      for( i=0;i<k;i++)
     {
         for( j=i+1;j<k;j++)
         if(nums[i]+nums[j]==target)
          { f=1;break;}
          if(f==1)
          break;
     }
      vector<int> x;
      x.push_back(i+1);
      x.push_back(j+1);
      return x;
        // write your code here
    }
};