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326. Power of Three
Description
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
Follow up: Could you solve it without loops/recursion?
Solutions
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class Solution { public boolean isPowerOfThree(int n) { return n > 0 && 1162261467 % n == 0; } } -
class Solution { public: bool isPowerOfThree(int n) { return n > 0 && 1162261467 % n == 0; } }; -
class Solution: def isPowerOfThree(self, n: int) -> bool: return n > 0 and 1162261467 % n == 0 -
func isPowerOfThree(n int) bool { return n > 0 && 1162261467%n == 0 } -
function isPowerOfThree(n: number): boolean { return n > 0 && 1162261467 % n == 0; } -
/** * @param {number} n * @return {boolean} */ var isPowerOfThree = function (n) { return n > 0 && 1162261467 % n == 0; };