PAT 03-树1 树的同构 (25分)】的更多相关文章

题目地址 https://pta.patest.cn/pta/test/15/exam/4/question/711 5-3 树的同构   (25分) 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…
PTA 树的同构 (25分) 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个英文大写字母.其左孩子结点的编号.右孩子结点的编号.如果孩子结点为空,则在相应位置上给出"-".给出的数据间用一个空格分隔.注意:题目保证每个结点中存储的字母是不同的. 输出格式: 如果两棵树是同构的,输出"Yes",否则输出"…
PAT甲级:1036 Boys vs Girls (25分) 题干 This time you are asked to tell the difference between the lowest grade of all the male students and the highest grade of all the female students. Input Specification: Each input file contains one test case. Each cas…
PAT甲级:1089 Insert or Merge (25分) 题干 According to Wikipedia: Insertion sort iterates, consuming one input element each repetition, and growing a sorted output list. Each iteration, insertion sort removes one element from the input data, finds the loca…
1080 MOOC期终成绩 (25 分) 对于在中国大学MOOC(http://www.icourse163.org/ )学习“数据结构”课程的学生,想要获得一张合格证书,必须首先获得不少于200分的在线编程作业分,然后总评获得不少于60分(满分100).总评成绩的计算公式为 G=(G​mid−term​​×40%+G​final​​×60%),如果 G​mid−term​​>G​final​​:否则总评 G 就是 G​final​​.这里 G​mid−term​​ 和 G​final​​ 分别…
1002 A+B for Polynomials (25 分) This time, you are supposed to find A+B where A and B are two polynomials. Input Specification: Each input file contains one test case. Each case occupies 2 lines, and each line contains the information of a polynomial…
1145 Hashing - Average Search Time (25 分)   The task of this problem is simple: insert a sequence of distinct positive integers into a hash table first. Then try to find another sequence of integer keys from the table and output the average search ti…
1066 Root of AVL Tree (25 分)   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 th…
1055 The World's Richest (25 分)   Forbes magazine publishes every year its list of billionaires based on the annual ranking of the world's wealthiest people. Now you are supposed to simulate this job, but concentrate only on the people in a certain r…
1047 Student List for Course (25 分)   Zhejiang University has 40,000 students and provides 2,500 courses. Now given the registered course list of each student, you are supposed to output the student name lists of all the courses. Input Specification:…