231. Power of Two

Posted 2020-07-03 阿怪123

public class Solution {
    public boolean isPowerOfTwo(int n) {
        if(n<=0)
            return false;
        else if(n==1)
            return true;
        int temp=n;
        int count=0;
        while(temp!=1)
        {
            temp/=2;
            count++;
        }
        for(int i=0;i<count;i++)
            temp*=2;
        if(temp==n)
            return true;
        else
            return false;
        
    }
}