Concepts3

Persistent DSU (Fully Persistent Union-Find)

A persistent DSU (Union-Find) keeps all historical versions so you can query connectivity at any past version and even branch new futures from old states.

#persistent dsu#fully persistent union-find#union by rank+12

🗂️Data StructureAdvanced

Persistent Array and Treap

Persistence lets you keep every past version of a data structure while making O(log n) updates and queries on any version.

#persistent array#persistent segment tree#treap+12

🗂️Data StructureAdvanced

Persistent Segment Tree

A persistent segment tree stores every historical version of an array-like data while supporting queries and updates in O(log n) time.

#persistent segment tree#path copying#kth smallest+12