题解 | #只出现一次的数字#
只出现一次的数字
https://www.nowcoder.com/practice/c04bd25f0396471b90dfc30d96b9109b
class Solution { public: int singleNumber(vector<int>& nums) { // write code here int n = nums.size(); int ans = 0; for(int i = 0; i < n; i++){ ans ^= nums[i]; } return ans; } };