LeetCode-Power of Two

和上一个题一样 更简单

public class Solution {
    public boolean isPowerOfTwo(int n) {
        if ( n == 0 )
            return false;
        while ( n % 2 == 0 ){
            n /= 2;
        }
        if ( n == 1 )
            return true;
        else
            return false;
    }
}