Tree Traversals Again - 树的非递归遍历 1|0前言 考的是非递归方法求中序遍历,把过程给出,逆推出树的结构,再后序遍历即可。 其实感觉或许可以不用求树的结构的,可以直接动态输出,但是太费脑子了,以后有空再想吧。 2|0题目 An inorder binary tree traversal can be implemented in a non-recursive way wit...
03-树3 Tree Traversals Again (25 分) An inorder binary tree traversal can be implemented in a non-recursive way with a stack. For example, suppose that
入栈顺序为先序遍历(根左右),出栈顺序为中序遍历(左根右)。 1086 Tree Traversals Again #include<bits/stdc++.h>usingnamespacestd;typedeflonglongll;constintN=1e6+100;constintM=N*10;constintmod=1e9+7;constdoubleeps=1e-9;typedefpair<int,int>PII;#define endl '\n'#define x first#define y ...
B1086 Tree Traversals Again (25分) 由题意可以推出,每次访问一个新的结点时就把它入栈,这个过程和先序序列总是先访问根节点的性质是相同的,因此Push的次序就是先序遍历中元素的顺序,Pop则是按左子树,根节点,右子树的顺序进行的,因此Pop的次序是中序遍历序列中元素的顺序. ...
1. 题目描述 03-树3 Tree Traversals Again(25 分) An inorder binary tree traversal can be implemented in a non-recursive way with a stack. For example, suppose that when a 6-node binary tree (with the keys numbered from 1 to 6) is traversed, the stack operations are: push(1); push...
1086. Tree Traversals Again (25) 时间限制 200 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue An inorder binary tree traversal can be implemented in a non-recursive way with a stack. For example, suppose that when a 6-node binary tree (with the keys numbered...
03-树3 Tree Traversals Again 这一题,需要清楚非递归遍历二叉树的知识,你是否和我一样又回头预习了复习了这个知识呢 An inorder binary tree traversal can be implemented in a non-recursive way with a stack. For example, suppose that when a 6-node binary tree (with the keys numbered from 1 to...
1086 Tree Traversals Again 题目 题意:给出前序和中序遍历的结果,重构二叉树并返回后序遍历的结果 tip:前序中序构造后序 #include<iostream> #include<stack> #include<vector> using namespace std; vector<int>pre,inorder,pos; int n,count;
【摘要】 1086 Tree Traversals Again (25 分) 题目传送门:1086 Tree Traversals Again (25 分) 一、题目大意 这道题的难点就在于是否能读懂题意了。... 1086 Tree Traversals Again (25 分) 题目传送门:1086 Tree Traversals Again (25 分) 一、题目大意 ...
2019-12-06 14:26 −1086 Tree Traversals Again (25分) An inorder binary tree traversal can be implemented in a non-recursive way with a stack. For e... 蔡军帅 0 405 CF1254D Tree Queries(树链剖分) 2019-11-24 14:24 −出题人的做法是 $O(n\sqrt{n\log n})$,结果这场结束后就...