algorithm ch6 heapsort 堆排序利用的是堆这种数据结构来对进行排序,(二叉)堆可以被视为一棵完全的二叉树,树的每个节点与数组中存放该节点的值得那个元素对应。这里使用最大堆进行排序算法设计,最大堆就是parent(i) > leftchild(i) 且parent(i) > rightchild(i),首先利用迭代法进行建堆。 View
5. Max Heap Sort VariantsWrite a C program to sort numbers using the MAX heap algorithm.Note: A sorting algorithm that works by first organizing the data to be sorted into a special type of binary tree called a heap.Sample Solution:Sample C Code:#include <stdio.h> int main() { int ...
堆排序Heapsort的Java和C代码 Heapsort排序将整个数组看作一个二叉树heap, 下标0为堆顶层, 下标1, 2为次顶层, 然后每层就是"3,4,5,6", "7, 8, 9, 10, 11, 12, 13, 14", ..., 对于其中的每一个非叶子节点, 其子节点的下标为 2 * pos + 1 和 2 * pos + 2...
#pragma once #include<cassert> #include<iostream> #include<math.h> #include<set> #include<iomanip> #include<algorithm> using namespace std; //最大堆类 template<typename Item> class MaxHeap { public: MaxHeap(size_t capacity=100) :data(new Item[capacity]), count(0), capacity(capacity) ...
parent--;// (即将重排之子树的)头部向前一个节点 } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 九、heap算法演示案例 演示案例① #include <iostream> #include <algorithm> usingnamespacestd;...
Heap Sort 实现(MIT Algorithm Course) 根据算法导论实现。有个小缺陷,heapsort中result是逆序排序。 def parent(i): return i%2; def left(i): return 2*i+1; def right(i): return 2*(i+1); def maxHeapify(numList,i): l = left(i);...
// CPP program to illustrate// std::sort_heap#include<vector>#include<algorithm>#include<functional>#include<iostream>intmain( ){usingnamespacestd;vector<int> vt1, vt2;vector<int>::iterator Itera1, Itera2;inti;for( i =1; i <=5; i++ ) ...
The algorithms implemented by qsort, qsort_r and heapsort are not stable, that is, if two members compare as equal, their order in the sorted array is undefined. The mergesort algorithm is stable. The qsort and qsort_r functions are an implementation of C.A.R. Hoare's "quicksort" al...
6.4 The heapsort algorithmEdition, SecondLeiserson, Charles ERivest, Ronald LStein, Clifford
Algorithm: Heapsort(A) BUILD-MAX-HEAP(A) for i = A.length downto 2 exchange A[1] with A[i] A.heap-size = A.heap-size - 1 MAX-HEAPIFY(A, 1) AnalysisThe heap sort algorithm is the combination of two other sorting algorithms: insertion sort and merge sort....