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    Guided course · Coding and System-Design Practice in C#

    DSA Coding Patterns in C#: back to the course

    Module 4 · Graphs, Heaps and Intervals · Lesson 13 of 17

    Topological Sort, Dijkstra with PriorityQueue and Union-Find in C#

    18 min readTechInterviewNotes Editorial TeamUpdated 13 Oct 2026Save

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    Its text, video and cheat sheet open with Full Access. This course's free lessons open without an account. Start with How to Solve and Check a Coding Problem in C#: Patterns, Tests and Measured Big-O.

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