2018年3月16日
1018. Public Bike Management (30)
摘要： There is a public bike service in Hangzhou City which provides great convenience to the tourists from all over the world. One may rent a bike at any s 阅读全文
posted @ 2018-03-16 20:33 王清河 阅读(367) 评论(0) 推荐(0) 编辑
1076. Forwards on Weibo (30)
摘要： Weibo is known as the Chinese version of Twitter. One user on Weibo may have many followers, and may follow many other users as well. Hence a social n 阅读全文
posted @ 2018-03-16 14:57 王清河 阅读(130) 评论(0) 推荐(0) 编辑
1034. Head of a Gang (30)
摘要： One way that the police finds the head of a gang is to check people's phone calls. If there is a phone call between A and B, we say that A and B is re 阅读全文
posted @ 2018-03-16 13:58 王清河 阅读(299) 评论(0) 推荐(0) 编辑
2018年3月15日
1021. Deepest Root (25)
摘要： A graph which is connected and acyclic can be considered a tree. The height of the tree depends on the selected root. Now you are supposed to find the 阅读全文
posted @ 2018-03-15 19:52 王清河 阅读(137) 评论(0) 推荐(0) 编辑
1013. Battle Over Cities (25)
摘要： It is vitally important to have all the cities connected by highways in a war. If a city is occupied by the enemy, all the highways from/toward that c 阅读全文
posted @ 2018-03-15 14:12 王清河 阅读(103) 评论(0) 推荐(0) 编辑
1090. Highest Price in Supply Chain (25)
摘要： A supply chain is a network of retailers（零售商）, distributors（经销商）, and suppliers（供应商）-- everyone involved in moving a product from supplier to customer 阅读全文
posted @ 2018-03-15 10:49 王清河 阅读(136) 评论(0) 推荐(0) 编辑
1079. Total Sales of Supply Chain (25)
摘要： A supply chain is a network of retailers（零售商）, distributors（经销商）, and suppliers（供应商）-- everyone involved in moving a product from supplier to customer 阅读全文
posted @ 2018-03-15 10:25 王清河 阅读(138) 评论(0) 推荐(0) 编辑
2018年3月14日
1012. The Best Rank (25)
摘要： To evaluate the performance of our first year CS majored students, we consider their grades of three courses only: C - C Programming Language, M - Mat 阅读全文
posted @ 2018-03-14 20:55 王清河 阅读(124) 评论(0) 推荐(0) 编辑
1102. Invert a Binary Tree (25)
摘要： The following is from Max Howell @twitter: Google: 90% of our engineers use the software you wrote (Homebrew), but you can't invert a binary tree on a 阅读全文
posted @ 2018-03-14 16:31 王清河 阅读(123) 评论(0) 推荐(0) 编辑
1082. Read Number in Chinese (25)
摘要： Given an integer with no more than 9 digits, you are supposed to read it in the traditional Chinese way. Output "Fu" first if it is negative. For exam 阅读全文
posted @ 2018-03-14 14:42 王清河 阅读(205) 评论(0) 推荐(0) 编辑