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