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Solution: Implement Depth-First Search

Explore how to implement depth-first search (DFS) for directed graphs starting from a specified source vertex. Understand how to manage cycles using a visited array, use stacks for traversal, and analyze the algorithm's time and space complexity. This lesson helps you master graph traversal techniques essential for coding interviews.

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Statement

Given a directed graph represented by an adjacency array graph and an integer source, representing the start vertex of the graph, return an array of integers, result that shows the order of depth-first traversal starting from the specified source vertex.

Constraints

  • 11 \leqgraph.length \leq ...