Poison

137. Single Number II

发表于 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
class Solution {
    public int singleNumber(int[] nums) {
        int res = 0;
        
        for (int offset = 0; offset < Integer.SIZE; offset++) {
            int mask = 1 << offset;
            int times = 0;
            for (int num : nums) {
                if ((num & mask) != 0) {
                    times++;
                }
            }
            if (times % 3 != 0) {
                res |= mask;
            }
        }

        return res;
    }
}
Reference

137. Single Number II
剑指 Offer II 004. 只出现一次的数字