}intmain(){intn,val;scanf("%d", &n); TreeNode* root =NULL;for(inti =0; i < n; i++) {scanf("%d", &val); insert(val, root); }//level order traversalqueue<TreeNode*> q; q.push(root);vector<TreeNode*>level_order(1,NULL);while(!q.empty()) { TreeNode* top = q.front...
题目:1123 Is It a Complete AVL Tree 该题目综合了:1066 Root of AVL Tree与1110 Complete Binary Tree。 大致题意:给出一个包含N个元素的序列,构建一个平衡二叉树,然后判断其是否是一棵完全二叉树。 思路分析:先用七步口决构建平衡二叉树,然后按层序遍历,把二叉树的所有结点(包含空结点)入队,当第一次碰到...
struct node * creatAVL(struct node* root,int t) { if(root==NULL) { root=new node(); root->val=t; root->left=root->right=NULL; } else if(t<root->val) { root->left=creatAVL(root->left,t); if(getheight(root->left)-getheight(root->right)==2) root=t<root->left->val?ri...
PAT 1123 Is It a Complete AVL Tree C++版 1.题意 给出一个整数列,判断由这个数列得到的平衡二叉树是否是一棵完全的平衡二叉树。 2.分析 主要分成两个步骤: step 1:得到一棵平衡二叉树 step 2:判断是否完全 第一部分在PAT中已经有题目(pat 1066)实现过了。第二部分也已经题目(记不清了...
(tree);}}returntree;//返回树的结点}intisComplete=1,after=0;//iscomplete为标记是否是完全二叉树,after为标记左右情况vector<int>levelOrder(node*tree){//层序遍历vector<int>v;queue<node*>queue;queue.push(tree);while(!queue.empty()){node*temp=queue.front();queue.pop();v.push_back(temp->...
Now given a sequence of insertions, you are supposed to output the level-order traversal sequence of the resulting AVL tree, and to tell if it is a complete binary tree. Input Specification: Each input file contains one test case. For each case, the first line contains a positive integer ...
1123 Is It a Complete AVL Tree (30 分)--PAT甲级 1123IsItaCompleteAVLTree(30 分)AnAVLtreeisaself-balancingbinarysearchtree.InanAVLtree,theheightsofthetwochildsubtreesofanynodedifferbyatmostone;ifatanytimethey 智能推荐 AVL树 AVL树又称为高度的平衡二叉树,它能保持二叉树高度的平衡,尽量降低二叉树的高...
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At this excercise, why is a double rotation made in this AVL Tree after the insert(2) ? I thought since the Tree ist -1/+2 (from 5 and 3) and both balance values are negative a simple rotation should be made. But a double rotation is made....