Flowcharts & Processes

Topological Sort with Kahn's Algorithm

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Flowchart showing Kahn's algorithm: calculate in-degrees, queue zero-degree nodes, pop nodes, decrement neighbor counts, and check for cycles.
Flowchart showing Kahn's algorithm: calculate in-degrees, queue zero-degree nodes, pop nodes, decrement neighbor counts, and check for cycles.
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What it shows

  • In-degree tracks incoming edges; zero in-degree means a task is unblocked.
  • A queue processes ready nodes in O(V + E) linear time.
  • Unprocessed nodes remaining at the end indicate an impossible cycle.

The takeaway

Topological sorting turns complex build dependency graphs into an executable sequential order.

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