Package g0201_0300.s0263_ugly_number

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    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 = 1

    Output: true

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

    Example 3:

    Input: n = 14

    Output: false

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

    Constraints:

    • <code>-2<sup>31</sup><= n <= 2<sup>31</sup> - 1</code>

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      final Boolean isUgly(Integer n)

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait