LeetCode:326. Power of Three

2019独角兽企业重金招聘Python工程师标准>>>

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

Follow up:
Could you do it without using any loop / recursion?

Credits:
Special thanks to @dietpepsi for adding this problem and creating all test cases.

解答:

func isPowerOfThree(n int) bool {
   if n == 0 {
       return false
   }
   c := math.Log10(float64(n)) / math.Log10(3)
   d := float64(int64(c))
   return (c - d) < 0.0000000001
}

转载于:https://my.oschina.net/ifraincoat/blog/1069049

LeetCode:326. Power of Three相关推荐

LeetCode 326. Power of Three
题目: Given an integer, write a function to determine if it is a power of three. Follow up: Could you ...
[leetcode]326. Power of Three（c语言）
题目 Given an integer, write a function to determine if it is a power of three. Follow up: Could you d ...
LeetCode 326. Power of Three （算法，换底公式）
Given an integer, write a function to determine if it is a power of three. Follow up: Could you do i ...
leetcode 326. 3的幂(Power of Three)
目录题目描述: 示例 1: 示例 2: 示例 3: 示例 4: 进阶: 解法: 题目描述: 给定一个整数,写一个函数来判断它是否是 3 的幂次方. 示例 1: 输入: 27输出: true 示例 2 ...
[LeetCode][JavaScript]Power of Three
Power of Three Given an integer, write a function to determine if it is a power of three. Follow up: ...
[leetcode] 342. Power of Four
题目 Given an integer (signed 32 bits), write a function to check whether it is a power of 4.Example: ...
leetcode 342. Power of Four
Given an integer (signed 32 bits), write a function to check whether it is a power of 4. Example: Gi ...
leetcode 231. Power of Two
Given an integer, write a function to determine if it is a power of two. class Solution(object):def ...
LeetCode - 231. Power of Two
Given an integer, write a function to determine if it is a power of two. Example 1: Input: 16 Output ...

LeetCode:326. Power of Three

LeetCode:326. Power of Three相关推荐

最新文章

热门文章