Leetcode 231: Power of Two, leetcode231

Source: Internet
Author: User

Leetcode 231: Power of Two, leetcode231
Power of TwoTotal Accepted:3596Total Submissions:11779

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

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


For power of two, 2 is in tabulation, and there is only one. you can shift to the number of 1, here with a clever way, that is, to determine whether N & (N-1) is 0.


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

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