231. Power of Two.java

/**
Given an integer, write a function to determine if it is a power of two.

Example 1:

Input: 1
Output: true 
Explanation: 20 = 1
Example 2:

Input: 16
Output: true
Explanation: 24 = 16
Example 3:

Input: 218
Output: false
**/


class Solution {
    public boolean isPowerOfTwo(int n) {
        return (n>0&&((n&(n-1))==0));


    }
}