Python Sorting Algorithm – Heap Sorting -P5
Learning : Python, Math, Algorithm
Subject: Sorting Algorithm, Heap Sort P5
[NOTE: To keep the code as simple as we can, We WILL NOT ADD any user input Varevecations. Assuming that our user will Enter the right inputs.]
In Last Parts (2, 3 and 4) we wort the Following Functions:
- Sections Header.
- Main Menu Function.
- Entering/Creating the Array.
- Print-Out or to Display the Array.
- Check If Array in Max-Heap.
- Convert Array to Max-Heap.
- Add Node to Max-Heap.
- Delete a Node from a Max-Heap.
In this last part-5 we will write the last main Function to aplay the Heap Sorting Algorithm.
Scope of Work: Deleting a Node from a Max-Heap Array is the main function in sorting an Array using Max-Heap Algorithm, the Deleting is always from the Root Node, So if we delete the most top Node [Root] (and store it in index[0] in a temp_array) then we move the Last Node to it’s position and by doing that we miss the Max-Heap state of the Array, so we convert the array to a Max-heap, then we Delete the Root again until we delete all the elements in the Array.. Here the Algorithm:
Assuming we have a Max-Heap Array:
1. Delete the Root Element, and Store it in index[0] in Temp_array.
2. Move the Last Element in the Array to index[0].
3. If the Array not in Max-Heap then Convert it to a Max-Heap.
4. Repeat Steps 1 to 3 Until length of Array is 0.
In our list of Functions up, we have the three Functions we Need to complete/apply a Max-Heap Sorting:
We Delete a Node using def delete_node(arr,inside): then in a while loop we call both def check_if_max_heap (arr,inside): and def convert_to_max_heap (arr,inside): so let’s see the code..
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We finish Max-Heap Sorting Algorithm, ..
..:: Have Fun with Coding ::.. 🙂
To Download my Python code (.py) files Click-Here
By: Ali Radwani