https://pintia.cn/problem-sets/994805342720868352/problems/1071785408849047552 In computer science, a heap is a specialized tree-based data structure that satisfies the heap property: if P is a parent node of C, then the key (the value) of P is eithe…

In computer science, a heap is a specialized tree-based data structure that satisfies the heap property: if P is a parent node of C, then the key (the value) of P is either greater than or equal to (in a max heap) or less than or equal to (in a min h…

题意分析: 给出一个1000以内的整数N,以及N个整数,并且这N个数是按照完全二叉树的层序遍历输出的序列,输出所有的整条的先序遍历的序列(根 右 左),以及判断整棵树是否是符合堆排序的规则(判断是大顶堆,小顶堆,不是堆) 题解分析: 由于给出的整数序列是按照完全二叉树的层序遍历,所以不存在中间有空的节点,并且层序遍历满足1~N的节点顺序正好方便我们一边输入一边建立完全二叉树,之后就是正常的先序遍历(这题要求根 右 左),有所区别的是最后的输出每次到达最后一个叶子节点的时候都需要输出一遍整条序列,…

In computer science, a heap is a specialized tree-based data structure that satisfies the heap property: if P is a parent node of C, then the key (the value) of P is either greater than or equal to (in a max heap) or less than or equal to (in a min h…

题目 In computer science, a heap is a specialized tree-based data structure that satisfies the heap property: if P is a parent node of C, then the key (the value) of P is either greater than or equal to (in a max heap) or less than or equal to (in a mi…

题目链接:1155 Heap Paths (30 分) In computer science, a heap is a specialized tree-based data structure that satisfies the heap property: if P is a parent node of C, then the key (the value) of P is either greater than or equal to (in a max heap) or less…

比较简单的一题 遍历左右的时候注意一下 #include<bits/stdc++.h> using namespace std; ; ]; ; vector<int>t; vector<int>p[N]; int n; void dfs(int v) { ){ ; ]!=-||s[i*+]!=-){ return; } p[cnt++]=t; return ; } t.push_back(s[v]); dfs(v*+); dfs(v*); t.pop_back(); }…

题干前半略. Sample Input 1: 8 98 72 86 60 65 12 23 50   Sample Output 1: 98 86 23 98 86 12 98 72 65 98 72 60 50 Max Heap   Sample Input 2: 8 8 38 25 58 52 82 70 60   Sample Output 2: 8 25 70 8 25 82 8 38 52 8 38 58 60 Min Heap   Sample Input 3: 8 10 28 15…

堆 目录 <算法笔记>重点摘要 1147 Heaps (30) 1155 Heap Paths (30) <算法笔记> 9.7 堆 重点摘要 1. 定义 堆是完全二叉树,树中每个结点的值不小于(或不大于)其左右子结点的值,称之为大顶堆(或小顶堆) const int maxn = 100; int heap[maxn], n = 10; // heap 为堆,n 为元素个数 2. 向下调整 // 对 heap 数组在 [low,high] 范围进行向下调整 // 其中 low 为欲…

PAT甲级1098. Insertion or Heap Sort 题意: 根据维基百科: 插入排序迭代,消耗一个输入元素每次重复,并增加排序的输出列表.在每次迭代中,插入排序从输入数据中删除一个元素,在排序列表中找到它所属的位置,并将其插入到其中.它重复,直到没有输入元素保留. 堆排序将其输入分成排序和未排序的区域,并且通过提取最大的元素并将其移动到排序的区域来迭代地缩小未排序的区域.它涉及使用堆数据结构而不是线性时间搜索来查找最大值. 现在给出整数的初始序列, 连同一些序列,这是一些排序方法…