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Heap Sort is a comparison-based sorting algorithm that uses a binary heap data structure. It is similar to selection sort where we first find the maximum element and place it at the end. We repeat the same process for the remaining elements.
Example
public class HeapSort {public void sort(int arr[]) {int n = arr.length;// Build heap (rearrange array)for (int i = n / 2 - 1; i >= 0; i--)heapify(arr, n, i);// One by one extract an element from heapfor (int i = n - 1; i >= 0; i--) {// Move current root to endint temp = arr[0];arr[0] = arr[i];arr[i] = temp;// Call max heapify on the reduced heapheapify(arr, i, 0);}}void heapify(int arr[], int n, int i) {int largest = i; // Initialize largest as rootint l = 2 * i + 1; // left = 2*i + 1int r = 2 * i + 2; // right = 2*i + 2// If left child is larger than rootif (l < n && arr[l] > arr[largest])largest = l;// If right child is larger than largest so farif (r < n && arr[r] > arr[largest])largest = r;// If largest is not rootif (largest != i) {int swap = arr[i];arr[i] = arr[largest];arr[largest] = swap;// Recursively heapify the affected sub-treeheapify(arr, n, largest);}}static void printArray(int arr[]) {int n = arr.length;for (int i = 0; i < n; ++i)System.out.print(arr[i] + " ");System.out.println();}public static void main(String args[]) {int arr[] = {12, 11, 13, 5, 6, 7};HeapSort ob = new HeapSort();ob.sort(arr);System.out.println("Sorted array is");printArray(arr);}}Copié !✕Copier Java Program for Heap Sort - GeeksforGeeks
23 juil. 2025 · Heap sort is a comparison-based sorting technique based on the Binary Heap data structure. It is similar to the selection sort where first find the maximum …
Heap Sort in Java - Baeldung
- Date de publication : 18 oct. 2018
Java Heap Sort Algorithm - Complete Tutorial with Examples
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java_sort/HeapSortExample.java at main · mai23133/java_sort
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Heap Sort in Java - Javacodepoint
22 déc. 2024 · Heap Sort is a comparison-based sorting algorithm that uses a binary heap data structure. It is an efficient algorithm with a worst-case time complexity of O (n log n).
- Autres questions posées
Implement Heap Sort Java Algorithm – 2 Ways | Java …
26 févr. 2026 · Implement Heap sort using Java – We will discuss the methods to Implement heapsort in Java. The compiler has been added so that you can easily …
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23 mai 2025 · Java Sorting Algorithm exercises and solution: Write a Java program to sort an array of given integers using the Heap sort algorithm.
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24 oct. 2023 · In this guide, we'll take a look at the theory and implementation of Heap Sort in Java - we'll be implementing it via a Heap and a PriorityQueue.
Heap Sort (With Code in Python, C++, Java and C)
3 oct. 1976 · Learning how to write the heap sort algorithm requires knowledge of two types of data structures - arrays and trees. In this tutorial, you will understand the …
Découvrez Java Heap Sort Example en détail
