• Home
• com.github.javadev
• leetcode-in-java21
• 1.25
• source code
• readme.md

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

g0201_0300.s0263_ugly_number.readme.md Maven / Gradle / Ivy

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