题目来源:https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=3&page=show_problem&problem=48 Tree Summing  Background LISP was one of the earliest high-level programming languages and, with FORTRAN, is one of the olde…

题意: 计算从根到叶节点的累加值,看看是否等于指定值.是输出yes,否则no.注意叶节点判断条件是没有左右子节点. 思路: 建树过程中计算根到叶节点的sum. 注意: cin读取失败后要调用clear恢复,否则后面无法正常读取. 注意空树都要输出no 最初代码如下:   #include<cstdio> #include<cstring> #include<iostream> #include<string> #include<algorithm>…

Tree Summing Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 8132   Accepted: 1949 Description LISP was one of the earliest high-level programming languages and, with FORTRAN, is one of the oldest languages currently being used. Lists, w…

UVA.548 Tree(二叉树 DFS) 题意分析 给出一棵树的中序遍历和后序遍历,从所有叶子节点中找到一个使得其到根节点的权值最小.若有多个,输出叶子节点本身权值小的那个节点. 先递归建树,然后DFS求解. 代码总览 #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #include <string> #include <sstre…

Tree Summing Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 7698   Accepted: 1737 Description LISP was one of the earliest high-level programming languages and, with FORTRAN, is one of the oldest languages currently being used. Lists, w…

You are to determine the value of the leaf node in a given binary tree that is the terminal node of a path of least value from the root of the binary tree to any leaf. The value of a path is the sum of values of nodes along that path. Input The input…

You are given a binary tree (not necessarily BST) in which each node contains a value. Design an algorithm to print all paths which sum up to that value. Note that it can be any path in the tree - it does not have to start at the root. http://stackov…

传送门1: https://uva.onlinejudge.org/external/5/536.pdf 传送门2: http://acm.gdufe.edu.cn/Problem/read/id/1077 题意一样   输入不一样 HINT: 1. Preorder : (root, left subtree, right subtree); Inorder : (left subtree, root, right subtree); Postorder: (left subtree, rig…

内存池技术就是创建一个内存池,内存池中保存着可以使用的内存,可以使用数组的形式实现,然后创建一个空闲列表,开始时将内存池中所有内存放入空闲列表中,表示空闲列表中所有内存都可以使用,当不需要某一内存时,将其放入空闲列表中,使内存可以循环使用.空闲列表可以用不定长数组vector定义,内存池和空闲列表的类型由使用内存的数据决定,如果使用内存的数据是用户自定义的结构体类型,则使用此类型.由于大部分情况下是使用指针进行内存调用,所以空闲列表中存储的是相应的指针. 具体实例如下: 题目: Trees ar…

Little Valentine liked playing with binary trees very much. Her favorite game was constructing randomly looking binary trees with capital letters in the nodes. This is an example of one of her creations:                                               …