标签:
Given an array of numbers nums
, in which exactly two elements appear only once and all the other elements appear exactly twice. Find the two elements that appear only once.
For example:
Given nums = [1, 2, 1, 3, 2, 5]
, return [3, 5]
.
Note:
[5, 3]
is also correct.class Solution {
public:
vector<int> singleNumber(vector<int>& nums) {
int len = nums.size();
int abxor = 0;
for (int i=0; i<len; i++) {
abxor ^= nums[i];
}
int mask = abxor & (~(abxor-1));
int a = 0;
int b = 0;
for (int i=0; i<len; i++) {
if ((mask&nums[i]) == 0) {
a ^= nums[i];
} else {
b ^= nums[i];
}
}
return vector<int>({a, b});
}
};
[LeetCode] 260 - Single Number III
标签:
原文地址:http://www.cnblogs.com/shoemaker/p/4767949.html