Persistent Segment Trees: Path Copying for Historical Range Queries
A persistent segment tree maintains a complete history of all structural modifications applied to the data structure. Unlike standard implementations that overwrite previous states, this variant preserves every version, enabling direct queries on historical configurations. The core technique relies on path copying, where only nodes along the mo ...
Posted on Tue, 21 Jul 2026 16:09:02 +0000 by philipolson