Why might returning pre/post numbers in this way be helpful

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Reference no: EM133702790

Question: In order to topologically sort or find strongly connected components, we need to be able to calculate pre and post numbers for each node. In this part, you will rework your implementation of DFS to allow it to generate pre and post order numbers for each node. It might be a good idea to copy/paste your solution from the previous part and modify it here. Task: Implement a function that computes DFS pre and post numbers for each node in the graph. To pass the autograder, your smallest preorder number should be 1. Your largest postorder number should be . Return two lists of tuples, a pre list should containing tuples (node, pre-number), and a post list containing tuples (node, post-number). Both lists should be ordered according to the pre/post number in the tuple. You should not use any sorting functions to accomplish this! Reflect: Why might returning pre/post numbers in this way be helpful for finding strongly connected components? Feel free to delete the starter code and implement your own solution. For this part, you can no longer assume that the entire graph is guaranteed to be reachable from some certain start node. How will this change your implementation?

Reference no: EM133702790

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