# 面试题49. 丑数
### 题目链接
#### [面试题49. 丑数]( https://www.nowcoder.com/practice/6aa9e04fc3794f68acf8778237ba065b?tpId=13&tqId=11186&tPage=2&rp=4&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking )
### 题目描述
把只包含质因子2、3和5的数称作丑数（Ugly Number）。例如6�
