Package g0201_0300.s0264_ugly_number_ii

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    264 - Ugly Number II\.

    Medium

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

    Given an integer n, return the <code>n<sup>th</sup></code> ugly number.

    Example 1:

    Input: n = 10

    Output: 12

    Explanation: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12 is the sequence of the first 10 ugly numbers.

    Example 2:

    Input: n = 1

    Output: 1

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

    Constraints:

    • 1 &lt;= n &lt;= 1690

    • 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 Integer nthUglyNumber(Integer n)

      • Methods inherited from class java.lang.Object

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