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Concept guides/Searching and sorting/Two pointers

CodingSearching and sorting

Two pointers

Medium3 min read

Questions it teaches

Intersection of two sorted arraysEasy15 min Merge two sorted code lists without repeatsEasy10 min Two-item calorie pairEasy11 min Remove failed samplesEasy10 min Merge sorted logsEasy11 min Sort squared deviationsEasy12 min Reverse range in placeEasy10 min Remove duplicate heart ratesEasy11 min

Related

Searching and sorting Arrays and strings Graphs and trees Performance review Designing data structures

Builds on: Arrays and strings

Arrays & in-place tricks3 min Hash maps & sets3 min

Leads to: Graphs and trees

Graph traversal (BFS & DFS)3 min Critical path scheduling4 min

Leads to: Performance review

Performance bugs3 min SQL query performance4 min

Related: Designing data structures

Queues, deques & ring buffers3 min Database deduplication3 min

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