25
Here is a brute force solution:
#include <iostream>
#include <vector>
using namespace std;
class Solution {
public:
vector<int> twoSum(vector<int>& nums, int target) {
int n = nums.size();
for (int i=0;i<n;++i)
for(int j=0;j<n;++j) if(i!=j) if (nums[i] + nums[j] == target) { vector<int> ret{ i,j };
return ret;
}
}
};
int main()
{
int target = 7;
vector<int> nums{ 1,2,3,4 }; vector<int> ret;
Solution Sol1;
ret = Sol1.twoSum(nums, target);
cout << "Solution is ";
for (auto i = ret.begin(); i != ret.end(); ++i) std::cout << *i << ' ';
}