2_Sum_Target.cpp

class Solution {
public:
    vector<int> twoSum(vector<int>& numbers, int target) {
        int i=0;
        int j=numbers.size()-1;
        vector<int>res;
        bool found=false;
        while(i<j){
            if(numbers[i]+numbers[j]==target){
                res.push_back(i+1);
                res.push_back(j+1);
                found=true;
                break;
            }
            else if(numbers[i]+numbers[j]<target){
                i++;
            }
            else{
                j--;
            }
        }
        return res;
    }
};