AVL | AVL implementation in C/C

by testrain C++ Version: Current License: No License

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kandi X-RAY | AVL Summary

AVL is a C++ library. AVL has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

AVL implementation in C/C++

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Support

AVL has a low active ecosystem.

It has 17 star(s) with 11 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 months.

AVL has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of AVL is current.

Quality

AVL has no bugs reported.

Security

AVL has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

AVL does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

AVL releases are not available. You will need to build from source code and install.

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AVL Key Features

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AVL Examples and Code Snippets

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Community Discussions

Trending Discussions on AVL

How to do arithmetic operation in Firebase data?

How can I use a recursive function from inside a struct if I want to use a field from that struct as a parameter

Adding data (pushing pair to list of pairs) to nodes in AVL tree is not working as I expect it to

is there a way to create an empty avl_tree with k nodes in O(k)?

Write text into canvas python tkinter

AVL Tree Nodes (Print)

Rotating the left the subtrees in an AVL Tree in python

Insertion into AVL tree

I'm getting a error on an AVL tree search problem

Pass argument value by pointer in function in c

QUESTION

How to do arithmetic operation in Firebase data?

Asked 2021-May-24 at 09:42

My database structure is:

...

ANSWER

Answered 2021-May-23 at 15:57

Data is loaded from Firebase asynchronously. While this data is being loaded, your main code continues to execute. This means that in your code the avl = tot - rem runs before any of the onDataChange methods has run, so tot and rem are still 0.

For this reason, any code that needs the data from the database needs to be inside the onDataChange, or be called from there. Since you have two calls to load data, you'll typically want to nest those calls, and the put the calculation into the inner onDataChange, like this:

Source https://stackoverflow.com/questions/67660856

QUESTION

How can I use a recursive function from inside a struct if I want to use a field from that struct as a parameter

Asked 2021-May-22 at 10:30

I have an AVL tree (I will not post all of the code because it wouldn't make sense), and I want to use a recursive function to delete it. The code looks something like this:

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ANSWER

Answered 2021-May-22 at 09:28

Create another private function that takes parameters:

Source https://stackoverflow.com/questions/67647876

QUESTION

Adding data (pushing pair to list of pairs) to nodes in AVL tree is not working as I expect it to

Asked 2021-May-19 at 13:12

I need to read words from a text file and store their frequency of occurrence, their location in the document and the name of the document they appeared in. This needs to be stored in an AVL tree with the word as the key. I have some of it working but we are required to store the location and name of document as a pair. This is the part I am having issues with. I spent a few hours trying different things and I can't figure out why its doing what it is. Basically it seems to work kinda for the first few words in the text file but every new word it reads it adds the previous words location and document pairs onto the new word. Sorry for my messy code and poor explanation I am still new. Here is a screenshot of what my output is.

https://i.imgur.com/Be1EBKM.png

main.cpp code

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ANSWER

Answered 2021-May-19 at 13:12

It took me some time to understand your problem and identify what was correct (the AVL part) and what was untested (in fact main code).

The problem is that newItem is declared outside of the while loop, so it keeps its values between iterations, specificaly the index member. So for a trivial fix, just declare it inside the loop:

Source https://stackoverflow.com/questions/67602936

QUESTION

is there a way to create an empty avl_tree with k nodes in O(k)?

Asked 2021-May-15 at 21:19

I want to create an AVL tree with the nodes' keys being numbers from 0 to k in O(k) time. I know it is possible to create a regular search tree with the same condition in O(k), but I have no idea how to do that with an AVL tree.

Thanks!

...

ANSWER

Answered 2021-May-15 at 21:19

An idea could be to first determine what the shape of the tree will be for a given argument. We could go for a so-called complete tree, sometimes also called "nearly complete". This uniquely defines the shape for a given number of nodes.

We can calculate which is the height of that tree, and what will be the value stored in the rightmost leaf on the bottom level of that tree. With a bit of fiddling it is not so hard to derive the formulas for both these values.

With that information you can build the tree recursively, using an inorder traversal as the tree is being built, where each next node will have the next sequential value.

In an AVL tree you'll want to store the balance factor (-1, 0, or 1). In this tree, most nodes will have balance 0, except for some nodes on the path from the root to the rightmost leaf on the bottom level: some of these will be left-heavy and have a balance factor of -1. These can be identified after the tree has been built, by performing a binary search from the root.

Here is an interactive implementation in JavaScript:

Source https://stackoverflow.com/questions/67545219

QUESTION

Write text into canvas python tkinter

Asked 2021-May-09 at 04:19

I have all the gui configurations and all that stuff in my main.py and my algorithms to draw bubble sort and merge sort in another .py file. I'm trying to write the print functions into my canvas but I'm not sure how to do it, can anyone help? I tried using a ListBox() but it messes up the main canvas for some reason.

This is my code for my main file:

...

ANSWER

Answered 2021-May-09 at 04:19

You can just pass in c2 to the function on the other file. So first define the parameter:

Source https://stackoverflow.com/questions/67453865

QUESTION

AVL Tree Nodes (Print)

Asked 2021-May-06 at 17:14

I'm currently working through AVL trees and am curious why the output (pre order traversal) is only showing two levels of indentation, as if one of the second order nodes is pointing to three separate 3rd level node. I'm note sure if this is an issue with my print function, or the actual code.

...

ANSWER

Answered 2021-May-06 at 17:14

Don't use tabs.

Consider this example:

Source https://stackoverflow.com/questions/67422894

QUESTION

Rotating the left the subtrees in an AVL Tree in python

Asked 2021-May-03 at 05:54

A bit of a newbie to computing science.

I have the basics for a binary tree in Python and I was studying some of the applications in an AVL tree:

...

ANSWER

Answered 2021-May-03 at 05:54

You are rotating the subtree at b, but your function expects the given node to have a right child, which obviously is not the case: there is nothing to rotate at b.

It would have made more sense if your main code would have asked for a rotation at node a:

Source https://stackoverflow.com/questions/67360342

QUESTION

Insertion into AVL tree

Asked 2021-Apr-22 at 12:45

I am currently trying to construct a AVL tree in c where each node contains a name and a value. The tree should be sorted by value. Currently, with the input:

...

ANSWER

Answered 2021-Apr-22 at 12:45

There are the following issues:

The height of a leaf node is 1, not 0. So the last return in the height function should be:

Source https://stackoverflow.com/questions/67208336

QUESTION

I'm getting a error on an AVL tree search problem

Asked 2021-Apr-13 at 20:54

I'm trying to do a search function for an AVL-tree, when i try to search for a number that is in the tree the code works fine, but i'm getting the error

AttributeError: 'NoneType' object has no attribute 'search'

when a try to search for a number that isn't in the tree

This is the search function

...

ANSWER

Answered 2021-Apr-13 at 20:54

    def search(self, data):
   
      if self is None:
        return "the key doesn't exist"  
      elif data < self.data:
        return self.left.busca(data)
      elif data > self.data:
        return self.right.busca(data)
      else:
        return "the key exist"

Source https://stackoverflow.com/questions/67081800

QUESTION

Pass argument value by pointer in function in c

Asked 2021-Mar-27 at 13:10

I am a newbie in learning c..... So I am trying to create a tree structure from inputs like:

...

ANSWER

Answered 2021-Mar-27 at 13:10

The main problem is that your InsertNode() function simply doesn't. It does construct an AVLTreeNode, traverse the tree to the new node's insertion point, and set its parent pointer, but it never updates a child pointer of the parent node, nor the root pointer of the tree in the case that it is initially empty. In particular, assigning to currentNode does not have this effect.

However, you could make this code work by adjusting it for currentNode to be a double pointer (AVLTreeNode **), so that you can assign indirectly through it to the wanted root or child pointer.

Source https://stackoverflow.com/questions/66831484

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