260. Single Number III

 1 package com.wang.test;
 2  
 3 import javax.naming.ldap.SortControl;
 4 
 5 /*
 6  * @tittle:260. Single Number III
 7  * @author:wwwglin
 8  * @time:2016/04/18
 9  */
10 public class SingleNumberIII {
11     //任何数字异或自身都为0
12     public int[] singleNumber(int[] nums) {
13         int resTwo = 0;
14         int[] res = new int[2];
15         for (int i = 0; i < nums.length; i++) {
16             resTwo ^= nums[i];
17         }
18         // find the rigthest bit which is not 0
19         resTwo &= -resTwo;
20         for (int i = 0; i < nums.length; i++) {
21             if ((nums[i] & resTwo) == 0) {
22                 res[0] ^= nums[i];
23             } else {
24                 res[1] ^= nums[i];
25             }
26         }
27         return res;
28     }
29 
30     public static void main(String[] args) {
31         int[] nums = { 1, 2, 3, 5, 7, 2, 4, 1, 7, 5 };
32         int[] res = new SingleNumberIII().singleNumber(nums);
33         for (int i : res) {
34             System.out.println(i);
35         }
36         
37     }
38 }