136. Single Number C++ 答案

136. Single Number -- Easy

解答

相同的数,XOR 等于 0,所以,将所有的数字 XOR 就可以得到只出现一次的数

class Solution {
public:
    int singleNumber(vector<int>& nums) {
        int s = 0;

        for(int i = 0; i < nums.size(); i++) {
            s = s ^ nums[i];
        }

        return s;
    }
};

参考

原文地址:https://www.cnblogs.com/optcheng/p/9783186.html

时间: 2024-07-29 06:24:58

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