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//

// Solution136.cpp

// Algorithm

//

// Created by Pancf on 2021/1/3.

//

#include "Solution136.hpp"

/**

* http://zh.wikipedia.org/wiki/%E9%80%BB%E8%BE%91%E5%BC%82%E6%88%96

* 利用了xor的性质

*/

int Solution136::singleNumber(std::vector<int> &nums)

{

int res = 0;

for (auto num : nums) {

res ^= num;

}

return res;

}