easyMathRecursion 0 views
Power of Three
Given an integer n, return true if it is a power of three.
Given an integer n, return true if it is a power of three. Otherwise, return false.
An integer n is a power of three, if there exists an integer x such that n == 3x.
Example 1
Input: n = 27
Output: true
Explanation: 27 = 33
Example 2
Input: n = 0
Output: false
Explanation: There is no x where 3x = 0.
Example 3
Input: n = -1
Output: false
Explanation: There is no x where 3x = (-1).
Constraints
- -231 <= n <= 231 - 1
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