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...
tree L,R; };voidInsert(tree &bt,intx) {if(bt==NULL){ bt=newnode; bt->data=x; bt->L=NULL; bt->R=NULL;return; }if(x<bt->data) Insert(bt->L,x);elseInsert(bt->R,x); } vector<int>pre1,pre2,post1,post2;voidpreorder1(tree bt,vector<int>&p) {if(bt){ p.push_back...
node a[1024]; bool first; 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 >= ...
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--;}else{while(i<=tail&&pre[root]<=pre[i])i++;while(j>root&&pre[root]>pre[j])j--;}if(i-j!=1)return;get...
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...
Is It a Binary Search Tree (25) Is It a Binary Search Tree (25) 难度:中等 题目连接 问题描叙 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....
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...
#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...
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...
1043 Is It a Binary Search Tree (25 分) 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 subt......