朚構造アルゎリズムAdvanced

AVL朚

1962幎にAdelson-VelskyずLandisによっお発明された最初の自己平衡二分探玢朚です。回転を通じお高さのバランスを維持し、O(log n)の操䜜を保蚌したす。赀黒朚よりも厳栌なバランシングは、デヌタベヌスやファむルシステムなどの怜玢が倚いアプリケヌションに理想的です。

#tree#self-balancing#rotation#binary-search-tree

Complexity Analysis

Time (Average)

O(log n)

Expected case performance

Space

O(n)

Memory requirements

Time (Best)

O(log n)

Best case performance

Time (Worst)

O(log n)

Worst case performance

📚 CLRS Reference

Introduction to Algorithms•Chapter 13•Section Notes

Watch rotations maintain balance!

Rotation Types

  • • LL: Right rotation (left-heavy)
  • • RR: Left rotation (right-heavy)
  • • LR: Left-Right rotation
  • • RL: Right-Left rotation
  • • Balance factor: height(left) - height(right)
  • • O(log n) for insert, delete, search
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AVL Tree - Algorithm Vision | Algorithm Vision