Questions tagged [heap-sort]

Heapsort is an efficient comparison-based sorting algorithm that divides an input into a sorted and an unsorted part and iteratively shrinks the unsorted part by extracting the largest element and moving that to the sorted part. Run time is O(n log n).

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9
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2answers
492 views

Planned Economy Bakery - Trying to scale a nested loop with a heap

Let's say you are living in a controlled economy where there is a baker in town, and every day he bakes a random number of loaves of bread (sometimes the oven breaks, or he has less ingredients). The ...
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0answers
113 views

C# code for minimizing the sum of an array by dividing it's elements (repetition allowed) by 2 for k times

The assumption is that k is quite large as compared to no. of elements in the array and division by 2 returns ceiling of the result. Request for your review and suggestions for further improvements ...
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1answer
34 views

Heap selection sort in Javascript

I have (designed and) implemented this fancy sorting algorithm that combines natural runs in the input array with a heap data structure: ...
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2answers
202 views

Heap Sort in Python

NOTE: I am beginner in Python I learnt the Heap sort today and tried my own implementation using Python. Can i get feedback for my code and areas of improvement. I have tried to add comments inline, ...
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3answers
301 views

Heap sort implementation in Python 3

This code relies on Python3.7.4 I'm learning Heapsort in python 3. Please show me the errors in my code. Runs on my computer but tell me if Python rules or not. ...
6
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1answer
1k views

Python 3 simple external sort with heapq

I've implemented a minimal external sort of text file using heapq python module. On the few tests I did it seems to works well, but I would like to have some advice to have a cleaner and faster code. ...
5
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1answer
186 views

Maximum Heap Container

I implemented this max-heap to satisfy the C++ Container requirements. I am fairly confident I implemented bubble_up, bubble_down...
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2answers
2k views

Heap Sort Implementation in Python

Objective: Create a heap sort that returns a unsorted list to sorted from greatest to least. Does this implementation look correct? Do you have any tips for optimizing this? ...
3
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2answers
769 views

Min-Heap in JavaScript

As part of my study on fundamentals, I have implemented the following code in JavaScript for a MinHeap data structure. Please have a look and I look forward to ...
3
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2answers
3k views

Min&Max Heap implementation in .NET

Overview I was doing some performance optimization patterns when I stumbled upon PriorityQueue and I implemented for that reason ...
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1answer
621 views

Implemented heapsort algorithm in Java

I am learning algorithms by using Java. Here is an implementation of heapsort. Let me know if anything is wrong and and suggestion to improve the algorithm. ...
3
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1answer
637 views

Implementation of the Heap Sort algorithm in C++

I'm writing a little collection of sorting algorithms and some benchmarks (using Google benchmark). I wrote the following heap sort but I'm struggling in ...
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3answers
295 views

Local heapsort in C++

Suppose we need to sort a sequence and we know that every sequence component is within \$d\$ steps from its correct position. In such a case we can use a local heapsort: we take \$d\$ as an argument ...
4
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1answer
611 views

Heap Sort in Scala

Trying to implement Heap Sort in Scala ...
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2answers
292 views

C++ Heap Sort In C++14

Realized I have never implemented heap sort. So here is my first attempt: ...
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1answer
219 views

Heapsort With Full-Scale Genericity

I've written a heapsort implementation. It's generic: generic comparators and sequences with elements of a generic type. The implementation (follows closely chapter 6 from Introduction to Algorithms ...
6
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1answer
3k views

C++ Heap implementation

I'm on my way of understanding basic data structures and sorting algorithms through implementing them in c++. Post is followed of my implementation of Vector. I decided to weld the heap behaviour ...
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0answers
220 views

Heap sort in Rust

The tests are taken from this answer on an insertion sort in rust question. The algorithm is taken from Algorithms in a Nutshell (2nd Edition). I'm not looking at crazy performance, the goal being ...
4
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2answers
776 views

In-place sorting of a binary file using heapsort

I have been working on sorting a file in-place with heapsort. I'm very glad it is working. But the time it takes is just too much. So I was wondering on how I could improve it. Here are my ...
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1answer
176 views

heapifyDown in heapsort

This is for heapsort and am wondering about the heapifyDown method. Here it is for review. I included relevant helper methods. The heap is stored in array starting ...
7
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1answer
216 views

Heapsort implementation in C++14

Please review the following implementation of heapsort and pay attention to the following: Have I correctly chosen the names InputIt and ...
7
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2answers
821 views

C++ Heap Sort Implementation

Just checking if I could still do it: ...