Package g0201_0300.s0264_ugly_number_ii

Class Solution

java.lang.Object

g0201_0300.s0264_ugly_number_ii.Solution

public class Solution
extends Object

264 - Ugly Number II.<p>Medium</p> <p>An <strong>ugly number</strong> is a positive integer whose prime factors are limited to <code>2</code>, <code>3</code>, and <code>5</code>.</p> <p>Given an integer <code>n</code>, return <em>the</em> <code>n^th</code> <em><strong>ugly number</strong></em>.</p> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> n = 10</p> <p><strong>Output:</strong> 12</p> <p><strong>Explanation:</strong> [1, 2, 3, 4, 5, 6, 8, 9, 10, 12] is the sequence of the first 10 ugly numbers.</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> n = 1</p> <p><strong>Output:</strong> 1</p> <p><strong>Explanation:</strong> 1 has no prime factors, therefore all of its prime factors are limited to 2, 3, and 5.</p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= n <= 1690</code></li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	nthUglyNumber(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

nthUglyNumber

public int nthUglyNumber(int n)