15 lines
236 B
C++

#include "soln.hpp"
int Solution::singleNumber(vector<int> &nums)
{
int uniq = 0;
for (int num : nums)
{
uniq ^= num;
}
return uniq;
}
bool Solution::test(vector<int>& nums, int answer) {
return singleNumber(nums) == answer;
}