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LeetCode - Refresh - Single Number II

时间:2015-03-23 16:01:05      阅读:82      评论:0      收藏:0      [点我收藏+]
 1 class Solution {
 2 public:
 3     int singleNumber(int A[], int n) {
 4         int ones = 0, twos = 0, threes = 0;
 5         for (int i = 0; i < n; i++) {
 6             twos |= (ones & A[i]);
 7             ones ^= A[i];
 8             threes = ~(ones & twos);
 9             ones &= threes;
10             twos &= threes;
11         }
12         return ones;
13     }
14 };

 

LeetCode - Refresh - Single Number II

原文:http://www.cnblogs.com/shuashuashua/p/4359852.html

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