摘要：Destroy Walls Long times ago, there are beautiful historic walls in the city. These walls divide the city into many parts of area. Since it was not co 阅读全文

摘要：The order of a Tree As we know,the shape of a binary search tree is greatly related to the order of keys we insert. To be precisely: 1. insert a key k 阅读全文

摘要：Elven Postman Elves are very peculiar creatures. As we all know, they can live for a very long time and their magical prowess are not something to be 阅读全文

摘要：HDU 3791 Falling Leaves 二叉搜索树 Figure 1Figure 1 shows a graphical representation of a binary tree of letters. People familiar with binary trees can ski 阅读全文

摘要：HDU 3791 二叉搜索树 判断两序列是否为同一二叉搜索树序列 Input开始一个数n，(1<=n<=20) 表示有n个需要判断，n= 0 的时候输入结束。 接下去一行是一个序列，序列长度小于10，包含(0~9)的数字，没有重复数字，根据这个序列可以构造出一颗二叉搜索树。 接下去的n行有n个序列， 阅读全文