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原创 [数据结构学习日记]File Transfer

We have a network of computers and a list of bi-directional connections. Each of these connections allows a file transfer from one computer to another. Is it possible to send a file from any computer on the network to any other?Input Specification:Each

2022-05-22 18:49:50 319

原创 [数据结构学习日记]PTA-Complete Binary Search Tree

A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties:The left subtree of a node contains only nodes with keys less than the node's key. The right subtree of a node contains only nodes with keys greater th

2022-05-08 12:59:46 508

原创 [数据结构学习日记]PTA-Root of AVL Tree

An AVL tree is a self-balancing binary search tree. In an AVL tree, the heights of the two child subtrees of any node differ by at most one; if at any time they differ by more than one, rebalancing is done to restore this property. Figures 1-4 illustrate t

2022-05-07 19:26:39 109

原创 [数据结构学习日记]是否同一棵二叉搜索树

给定一个插入序列就可以唯一确定一棵二叉搜索树。然而，一棵给定的二叉搜索树却可以由多种不同的插入序列得到。例如分别按照序列{2, 1, 3}和{2, 3, 1}插入初始为空的二叉搜索树，都得到一样的结果。于是对于输入的各种插入序列，你需要判断它们是否能生成一样的二叉搜索树。输入格式:输入包含若干组测试数据。每组数据的第1行给出两个正整数N(≤10)和L，分别是每个序列插入元素的个数和需要检查的序列个数。第2行给出N个以空格分隔的正整数，作为初始插入序列。随后L行，每行给出N个插入的元素，属于L个需要.

2022-05-01 14:13:51 148

原创 [数据结构学习日记]List Leaves

Given a tree, you are supposed to list all the leaves in the order of top down, and left to right.Input Specification:Each input file contains one test case. For each case, the first line gives a positive integerN(≤10) which is the total number of no..

2022-05-01 14:10:04 70

原创 [数据结构学习日记]PTA-树1 树的同构

给定两棵树T1和T2。如果T1可以通过若干次左右孩子互换就变成T2，则我们称两棵树是“同构”的。例如图1给出的两棵树就是同构的，因为我们把其中一棵树的结点A、B、G的左右孩子互换后，就得到另外一棵树。而图2就不是同构的。图1图2现给定两棵树，请你判断它们是否是同构的。输入格式:输入给出2棵二叉树树的信息。对于每棵树，首先在一行中给出一个非负整数N(≤10)，即该树的结点数（此时假设结点从0到N−1编号）；随后N行，第i行对应编号第i个结点，给出该结点中存储的1个英文大写字...

2022-04-21 13:20:07 106

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