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Solution: Detect Cycle in a Directed Graph

Explore the method to detect cycles in directed graphs by applying depth-first search and recursion stack tracking. This lesson helps you understand how to identify cycles by visiting nodes and managing their state during traversal, enabling you to implement and explain an efficient graph cycle detection algorithm.

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Statement

Given a directed graph, check whether the graph contains a cycle and return a boolean value accordingly.

A cycle occurs when you can start at one vertex, follow a path through the edges, and return to the starting vertex. This means at least one vertex is visited more than once within the same traversal path.

Note: Edges list is interpreted in the following manner:

edges = [[0, 2, 1], [], [2, 1, 0]]

Interpretation:

0:0,2,10: 0, 2, 1 ...