2016年9月4日

1020. Tree Traversals

摘要： Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to ou 阅读全文

posted @ 2016-09-04 23:22 Prince1994 阅读(126) 评论(0) 推荐(0) 编辑

1034. Head of a Gang

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 @ 2016-09-04 20:02 Prince1994 阅读(143) 评论(0) 推荐(0) 编辑

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