問題 https://leetcode-cn.com/problems/single-number/
練習使用JavaScript解答
/**
* @param {number[]} nums
* @return {number}
*/
var singleNumber = function(nums) {
var a = 0, i;
for(i=0;i<nums.length;++i) {
a ^= nums[i];
}
return a;
};
用位操作