Given an integer (signed 32 bits), write a function to check whether it is a power of 4.
Example:Given num = 16, return true. Given num = 5, return false.
Follow up: Could you solve it without loops/recursion?
class Solution {
public:
bool isPowerOfFour(int num) {
bool is=true;
if(num==0) is=false;
else if(num==1) is=true;
else if(num%4!=0) is=false;
else if(num%4==0) is=isPowerOfFour(num/4);
return is;
}
};
Given an integer (signed 32 bits), write a function to ch...
LeetCode 342. Power of Four Description Given an integer ...
首先是power of two, 然后奇数位是1的都不是，比如10, 1000 4 : 1(1), 4(100),...
My code: reference:https://discuss.leetcode.com/topic/428...
题目地址 https://leetcode.com/problems/power-of-four/descript...
Problem Given an integer (signed 32 bits), write a functi...
题目分析 题目链接，登录 LeetCode 后可用这道题目要求判断一个数是不是 4 的次方数，思路比较简单，先判断...
1.描述 Given an integer (signed 32 bits), write a function ...
Given an integer (signed 32 bits), write a function to ch...
Given an integer (signed 32 bits), write a function to ch...
本文标题：LeetCode342. Power of Four
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