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…

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:                                               …

题意:给出一颗二叉树的前序遍历和中序遍历,输出其后序遍历 用杭电1710的代码改一点,就可以了. #include<iostream> #include<cstdio> #include<cstring> #include <cmath> #include<algorithm> using namespace std; typedef long long LL; ; char a[maxn],b[maxn],ans[maxn],s1[maxn],…

题意: 给出先序和中序,求后序. 思路: ①建树然后递归输出. //建树的 #include<iostream> #include<cstdio> #include<queue> #include<cstring> using namespace std; int n; ],mid[]; ]; struct node{ char c; node *left,*right; node() { c='a'; left=right=NULL; } }; ,coun…

题意:已知先序中序,输出后序. #pragma comment(linker, "/STACK:102400000, 102400000") #include<cstdio> #include<cstring> #include<cstdlib> #include<cctype> #include<cmath> #include<iostream> #include<sstream> #include&…

题目 题目     分析 莫名A了     代码 #include <bits/stdc++.h> using namespace std; string s1,s2; void build(int l1,int r1,int l2,int r2) { int root=l1,p=l2; if(l1>r1) return; while(s2[p]!=s1[root] && p<=r2) p++; int cnt=p-l2; build(l1+1,l1+cnt,l2,…

Tree Recovery Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 11939   Accepted: 7493 Description Little Valentine liked playing with binary trees very much. Her favorite game was constructing randomly looking binary trees with capital le…

 Tree Recovery  Little Valentine liked playing with binary trees very much. Her favoritegame was constructingrandomly looking binary trees with capital letters in the nodes. This is an example of one of her creations: D / \ / \ B E / \ \ / \ \ A C G…

Tree Recovery Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 14640   Accepted: 9091 Description Little Valentine liked playing with binary trees very much. Her favorite game was constructing randomly looking binary trees with capital le…

Tree Recovery Description 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: D / \ / \ B E / \ \…