Package g0201_0300.s0263_ugly_number

Class Solution

java.lang.Object
g0201_0300.s0263_ugly_number.Solution
public class Solution extends java.lang.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 Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    isUgly(int n)
     

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • isUgly

      public boolean isUgly(int n)