Power of Three

Description

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

Example 1:

Input: 27
Output: true

Example 2:

Input: 0
Output: false

Example 3:

Input: 9
Output: true

Example 4:

Input: 45
Output: false

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

Solution(javascript)

const isPowerOfThree = function (n) {
  while (n > 1) {
    n /= 3
  }
  return n === 1
}