Class Solution

java.lang.Object
g0201_0300.s0263_ugly_number.Solution

public class Solution extends Object
263 - Ugly Number.

Easy

An ugly number is a positive integer whose prime factors are limited to 2, 3, and 5.

Given an integer n, return true if n is an ugly number.

Example 1:

Input: n = 6

Output: true

Explanation: 6 = 2 × 3

Example 2:

Input: n = 8

Output: true

Explanation: 8 = 2 × 2 × 2

Example 3:

Input: n = 14

Output: false

Explanation: 14 is not ugly since it includes the prime factor 7.

Example 4:

Input: n = 1

Output: true

Explanation: 1 has no prime factors, therefore all of its prime factors are limited to 2, 3, and 5.

Constraints:

  • -231 <= n <= 231 - 1
  • Constructor Details

    • Solution

      public Solution()
  • Method Details

    • isUgly

      public boolean isUgly(int n)