Leetcode136 Single Number
應該是之前在雲英Cloudin面試遇到過的一道題
class Solution { public int singleNumber(int[] nums) { if(nums.length==1) return nums[0]; int ans=nums[0]; for(int i=1;i<nums.length;i++){ ans=ans^nums[i]; } return ans; } }
使用了異或，比較獨特，除了下道，目前還沒遇到過同類型的題。這樣做就可以了。
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