Self-balancing binary search tree

An example of an unbalanced tree; following the path from the root to a node takes an average of 3.27 node accesses

The same tree after being height-balanced; the average path effort decreased to 3.00 node accesses

Tree rotations are very common internal operations on self-balancing binary trees to keep perfect or near-to-perfect balance.

In computer science, a self-balancing (or height-balanced) binary search tree is any node-based binary search tree that automatically keeps its height (maximal number of levels below the root) small in the face of arbitrary item insertions and deletions.

单词	Relaxed balance
释义	Relaxed balance 英语百科 Self-balancing binary search tree In computer science, a self-balancing (or height-balanced) binary search tree is any node-based binary search tree that automatically keeps its height (maximal number of levels below the root) small in the face of arbitrary item insertions and deletions.
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Relaxed balance

Self-balancing binary search tree