[Leetcode] Power of Two

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

Credits:

Special thanks to @jianchao.li.fighter for adding this problem and creating all test cases.

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

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