代码:#! /usr/bin/env python#coding=utf-8import random,copydef heap_sort_helper(lst,left,right): # max heapify current_value = lst[left] child =...
Heap Sort 的原理及Python实现 1.Heap表示方法 满足以下性质的二叉树Binary Tree可以成为Binary Heap: Complete Tree:所有的层都是完全的,除了最后一层,且最后一层的叶子靠左。 Min Heap or Max Heap:根节点是最大值或者最小值,而且这个性质对于任何递归得到的子树都成立。 Binary Heap通常使用array表示: 根节点...
arr[i], arr[largest], i=arr[largest], arr[i], largestelse:breakdefbuild_heap(arr):foriinrange(len(arr) / 2, -1, -1): max_heapify(l, i, len(arr))defheap_sort(arr): build_heap(arr) length=len(arr)foriinrange(1, length): arr[0], arr[-i] = arr[-i], arr[0] max_...
Heap Sort ExampleThe following example demonstrates heap sort in Python for numeric data. heap_sort.py #!/usr/bin/python def heapify(arr, n, i): largest = i left = 2 * i + 1 right = 2 * i + 2 if left < n and arr[i] < arr[left]: largest = left if right < n and arr...
以下是使用Python实现堆排序的完整代码: def heap_sort(arr): n = len(arr) # Build a maxheap. for i in range(n // 2 - 1, -1, -1): heapify(arr, n, i) # One by one extract elements for i in range(n - 1, 0, -1): arr[i], arr[0] = arr[0], arr[i] # swap heapify...
foriinrange(n): print(arr[i],end=" ") Output: After applying Heap Sort, the Array is: 9 11 14 32 54 71 76 79 This article tried to discuss theImplementation Of Heap Sort in Python. Hope this blog helps you understand the concept. To practice problems on Heap you can check outMY...
Python Java C C++ # Heap Sort in python def heapify(arr, n, i): # Find largest among root and children largest = i l = 2 * i + 1 r = 2 * i + 2 if l < n and arr[i] < arr[l]: largest = l if r < n and arr[largest] < arr[r]: largest = r # If root is not...
unsorted_array=[3,1,4,1,5,9,2,6,5,3,5]sorted_array=heap_sort(unsorted_array)print("Unsorted Array:",unsorted_array)print("Sorted Array:",sorted_array) 总结 堆是一种重要的数据结构,通过支持高效的插入和删除操作,在实际应用中发挥着重要作用。在Python中,可以使用heapq模块轻松实现堆。堆的应用...
python实现【堆排序】(HeapSort) 算法原理及介绍 堆排序(Heapsort)是指利用堆这种数据结构所设计的一种排序算法*。堆实质是一个近似完全二叉树的结构*,并同时满足堆积的性质:即子结点的键值或索引总是小于(或者大于)它的父节点。堆排序可以说是一种利用堆的概念来排序的选择排序。
在python中实现HeapSort有一些问题。输入序列没有正确排序..。这个实现如下所示:class Heap: def __init__(self, S, heapsize): self.S = S self.heapsize = heapsizedef shiftdown(H, i): ...