摘要: 题目描述: Ugly numbers are numbers whose only prime factors are 2, 3 or 5. The sequence 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, ... shows the first 11 ugly nu 阅读全文
posted @ 2017-04-05 21:07 masking_timeflows 阅读(104) 评论(0) 推荐(0) 编辑