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Chapter 3 Tree Revisit; AVL Tree
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In Chapter 3, we will revisit the tree data structure and introduce a new type
of tree called AVL tree.

.. toctree::
  :maxdepth: 2
  :caption: Topics

  /programming/ds/tree
  /programming/ds/bst
  /programming/ds/self-balancing-tree
  /programming/ds/avl-tree