Power of Three
Easy
You receive an integer n, provide true if it is a power of three. Otherwise, provide false.
An integer n is a power of three, if there exists an integer x such that n == 3^x.
Example 1
Input: n = 27
Output: true
Explanation: 27 = 3 ^3
Example 2
Input: n = 0
Output: false
Explanation: There is no x where 3 ^x = 0.
Example 3
Input: n = -1
Output: false
Explanation: There is no x where 3 ^x = (-1).
Constraints
-2^31<= n <= 2^31- 1
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