注意那个放入动态数组中放在不同位置就是不同次序遍历的实现 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 node contains only no...
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 node contains only nodes with keys greater than or equal to the node's key....
给定一个序列,问你是不是二叉排序树的前序序列,如果是,输出YES和后序序列,否则输出NO,这个二叉排序树可以是左边>=根,右边<根或者相反 输入输出: Sample Input 1: 7 8 6 5 7 10 8 11 Sample Output 1: YES 5 7 6 8 11 10 8 Sample Input 2: 7 8 10 11 8 6 7 5 Sample Output 2: YES 11...
int n; node *make1(node *a,int &now,node *p1, node *p2) { // val < p1->val, val >= p2->val if (now >= n) { return 0; } node *root = 0; if (((p1 == 0) || (a[now].val < p1->val)) && ((p2 == 0) || (a[now].val >= p2->val))) { root = a +...
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 node contains only nodes with keys greater than or equal to the node's key...
step2 柳神的策略,相比晴神的思路要繁杂些。 #include<cstdio>#include<vector>usingnamespacestd;boolisMirror;vector<int>pre,post;voidgetpost(introot,inttail){if(root>tail)return;inti=root+1,j=tail;if(!isMirror){while(i<=tail&&pre[root]>pre[i])i++;while(j>root&&pre[root]<=pre[j])j...
简介:【1043】Is It a Binary Search Tree (25 分)【1043】Is It a Binary Search Tree (25 分) #include<iostream>#include<stdio.h>#include<stdlib.h>#include<math.h>#include<string.h>#include<algorithm>#include<map>#include<vector>#include<queue>using namespace std;//镜像树的先序遍历只需...
#include<cstdio>#include<iostream>#include<vector>usingnamespacestd;intN;vector<int>pre,post;boolisMirror=false;voidgetpost(introot,inttail){if(root>tail)return;inti=root+1,j=tail;if(!isMirror){while(i<=tail&&pre[root]>pre[i])i++;while(j>root&&pre[root]<=pre[j])j--;}else{whil...
The right subtree of a node contains only nodes with keys greater than or equal to the node's key. Both the left and right subtrees must also be binary search trees. If we swap the left and right subtrees of every node, then the resulting tree is called theMirror Imageof a BST. ...
2. 3. 注意点 本题也可以在输入时建立rootm镜像树,之后就不需要写镜像树的先序和后续函数了 void insert(node* &root,int data)中node* &root使用了&引用类型,对于根节点root第一次insert后会变成非NULL节点,之后插入树中的元素一定为root->lc或root->rc,不会修改root节点了 ...