题目地址 https://pta.patest.cn/pta/test/15/exam/4/question/713 5-5 堆中的路径   (25分) 将一系列给定数字插入一个初始为空的小顶堆H[].随后对任意给定的下标i,打印从H[i]到根结点的路径. 输入格式: 每组测试第1行包含2个正整数NN和MM(\le 1000≤1000),分别是插入元素的个数.以及需要打印的路径条数.下一行给出区间[-10000, 10000]内的NN个要被插入一个初始为空的小顶堆的整数.最后一行给出MM个下标.…

L2-032 彩虹瓶 (25 分)   彩虹瓶的制作过程(并不)是这样的:先把一大批空瓶铺放在装填场地上,然后按照一定的顺序将每种颜色的小球均匀撒到这批瓶子里. 假设彩虹瓶里要按顺序装 N 种颜色的小球(不妨将顺序就编号为 1 到 N).现在工厂里有每种颜色的小球各一箱,工人需要一箱一箱地将小球从工厂里搬到装填场地.如果搬来的这箱小球正好是可以装填的颜色,就直接拆箱装填:如果不是,就把箱子先码放在一个临时货架上,码放的方法就是一箱一箱堆上去.当一种颜色装填完以后,先看看货架顶端的一箱是不是下一个…

1060 Are They Equal (25 分)   If a machine can save only 3 significant digits, the float numbers 12300 and 12358.9 are considered equal since they are both saved as 0 with simple chopping. Now given the number of significant digits on a machine and tw…

7-17 字符串关键字的散列映射(25 分) 给定一系列由大写英文字母组成的字符串关键字和素数P,用移位法定义的散列函数H(Key)将关键字Key中的最后3个字符映射为整数,每个字符占5位:再用除留余数法将整数映射到长度为P的散列表中.例如将字符串AZDEG插入长度为1009的散列表中,我们首先将26个大写英文字母顺序映射到整数0~25:再通过移位将其映射为3×32​2​​+4×32+6=3206:然后根据表长得到,即是该字符串的散列映射位置. 发生冲突时请用平方探测法解决. 输入格式: 输入第…

题目链接:https://pintia.cn/problem-sets/994805046380707840/problems/994805069361299456 L2-006 树的遍历 (25 分)   给定一棵二叉树的后序遍历和中序遍历,请你输出其层序遍历的序列.这里假设键值都是互不相等的正整数. 输入格式: 输入第一行给出一个正整数N(≤30),是二叉树中结点的个数.第二行给出其后序遍历序列.第三行给出其中序遍历序列.数字间以空格分隔. 输出格式: 在一行中输出该树的层序遍历的序列.数字…

L2-013 红色警报 (25 分)   战争中保持各个城市间的连通性非常重要.本题要求你编写一个报警程序,当失去一个城市导致国家被分裂为多个无法连通的区域时,就发出红色警报.注意:若该国本来就不完全连通,是分裂的k个区域,而失去一个城市并不改变其他城市之间的连通性,则不要发出警报. 输入格式: 输入在第一行给出两个整数N(0 < N ≤ 500)和M(≤ 5000),分别为城市个数(于是默认城市从0到N-1编号)和连接两城市的通路条数.随后M行,每行给出一条通路所连接的两个城市的编号,其间以1…

The "Hamilton cycle problem" is to find a simple cycle that contains every vertex in a graph. Such a cycle is called a "Hamiltonian cycle". In this problem, you are supposed to tell if a given cycle is a Hamiltonian cycle. Input Specif…

A clique is a subset of vertices of an undirected graph such that every two distinct vertices in the clique are adjacent. A maximal clique is a clique that cannot be extended by including one more adjacent vertex. (Quoted from https://en.wikipedia.or…

1122 Hamiltonian Cycle (25 分) The "Hamilton cycle problem" is to find a simple cycle that contains every vertex in a graph. Such a cycle is called a "Hamiltonian cycle". In this problem, you are supposed to tell if a given cycle is a H…

1043 Is It a Binary Search Tree(25 分) 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 nod…