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Concept guides/Graphs and trees/Union-Find (DSU)

CodingGraphs and trees

Union-Find (DSU)

Hard3 min read

Questions it teaches

Count the people behind merged user accountsEasy15 min Minimum spanning treeMedium35 min Redundant edge in treeMedium25 min Minimum cable replug operationsMedium30 min Maximum spanning tree weightMedium25 min Connected components after mergesMedium20 min Network connection timestampMedium25 min Account merge deduplicationMedium30 min

Related

Graphs and trees Searching and sorting Designing data structures Dynamic programming

Builds on: Searching and sorting

Sorting algorithms3 min Two pointers3 min

Builds on: Designing data structures

Queues, deques & ring buffers3 min Database deduplication3 min

Leads to: Dynamic programming

Dynamic programming: 2D & strings3 min Dynamic programming: 1D3 min

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