# Weak AVL Tree

DevFeed: [Weak AVL Tree](<https://devfeed.tech/articles/weak-avl-tree-31118.md>)

Original publisher: [Read original article](<https://maskray.me/blog/2025-12-14-weak-avl-tree>)

Published: 2025-12-14T08:00:00Z

Content type: tutorial

Language: en

Sources: [MaskRay](<https://devfeed.tech/sources/maskray.md>)

Topics: [Data structures](<https://devfeed.tech/topics/data-structures.md>), [implementation](<https://devfeed.tech/topics/implementation.md>)

Tags: [algorithm](<https://devfeed.tech/tags/algorithm.md>), [data-structure](<https://devfeed.tech/tags/data-structure.md>), [implementation](<https://devfeed.tech/tags/implementation.md>), [root](<https://devfeed.tech/tags/root.md>), [rotation](<https://devfeed.tech/tags/rotation.md>), [rules](<https://devfeed.tech/tags/rules.md>)

## AI overview

This article introduces weak AVL trees as a rank-based balanced binary search tree and compares their balancing behavior with AVL and red-black trees. It describes rank differences, insertion cases, rotation bounds, and an implementation detail for encoding ranks, while noting that deletion is not yet described.

## Source excerpt

tl;dr: Weak AVL trees are replacements for AVL trees and red-black trees. The 2014 paper