顿搜
飞过闲红千叶，夕岸在哪
类目归类
[LeetCode 231] Power of Two [Java] [Runtime : 2MS]
09/01
1. Description
Implement pow(x, n).
2. Runtime Distribution
3. Submission Details
4. Example
Input 16
Output: True
5. Code
public boolean isPowerOfTwo(int n) {
long num = n;
if (n == 0) {
return false;
}
return (num & (num - 1)) == 0;
}6.Test
public class LeetCode0231 {
public boolean isPowerOfTwo(int n) {
long num = n;
if (n == 0) {
return false;
}
return (num & (num - 1)) == 0;
}
public static void main(String[] args) {
LeetCode0231 leetcode = new LeetCode0231();
System.out.println(leetcode.isPowerOfTwo(256));
}
}
