摘要: foldl/r e.g. span 阅读全文
posted @ 2016-01-25 19:04 yanhh 阅读(218) 评论(0) 推荐(0) 编辑
摘要: 1 If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. Find the sum of al 阅读全文
posted @ 2016-01-25 11:41 yanhh 阅读(368) 评论(0) 推荐(0) 编辑