Leetcode题解

 1 class Solution {
 2 public:
 3     bool isPowerOfTwo(int n) {
 4         bitset<32> myset(n);
 5         if (n<=0)
 6         {
 7             return false;
 8         }
 9 
10         if (1==myset.count() || 0==myset.count())
11         {
12             return true;
13         }
14 
15         return false;
16 
17 
18     }
19 };