摘要: 问题起源于编程珠玑Column 12中的题目10,其描述如下: How could you select one of n objects at random, where you see the objects sequentially but you do not know the value of n beforehand? For concreteness, how would you read a text file, and select and print one random line, when you don’t know the number of lines in... 阅读全文
posted @ 2011-02-07 23:13 HappyAngel 阅读(15558) 评论(0) 推荐(9) 编辑