09 2019 档案

PAT 2019-3 7-1 Sexy Primes
摘要：Description: Sexy primes are pairs of primes of the form (p, p+6), so-named since "sex" is the Latin word for "six". (Quoted from http://mathworld.wol 阅读全文
posted @ 2019-09-01 19:57 林東雨 阅读(1191) 评论(0) 推荐(0) 编辑
PAT 2019-3 7-2 Anniversary
摘要：Description: Zhejiang University is about to celebrate her 122th anniversary in 2019. To prepare for the celebration, the alumni association （校友会） has 阅读全文
posted @ 2019-09-01 19:52 林東雨 阅读(220) 评论(0) 推荐(0) 编辑
PAT 2019-3 7-3 Telefraud Detection
摘要：Description: Telefraud（电信诈骗） remains a common and persistent problem in our society. In some cases, unsuspecting victims lose their entire life saving 阅读全文
posted @ 2019-09-01 19:49 林東雨 阅读(599) 评论(0) 推荐(0) 编辑
PAT 2019-3 7-4 Structure of a Binary Tree
摘要：Description: Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, a binary 阅读全文
posted @ 2019-09-01 19:41 林東雨 阅读(416) 评论(0) 推荐(0) 编辑