Practice Definition Of The Kth Matrix (20.3) - Warshall’s Algorithm for Computing Transitive Closure
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Definition of the kth Matrix

Practice - Definition of the kth Matrix

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define W(k) in your own words.

💡 Hint: Think about it as a way to show reachability in a graph.

Question 2 Easy

What does W(i, j)(1) equal if there is a direct edge from i to j?

💡 Hint: Consider if a direct connection counts.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does W(i, j)(k) = 1 mean?

There is a direct edge from i to j.
There exists a path from i to j with intermediates only from 1 to k.
i is not connected to j.

💡 Hint: Focus on the definition of W(k).

Question 2

True or False: The length of the path is crucial for W(k).

True
False

💡 Hint: Remember what defines a path in this context.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Create a directed graph with at least six nodes and present the W(k) matrices for k=1, 2, 3. Then explain how k affects connectivity.

💡 Hint: Consider how adding nodes modifies the pathways.

Challenge 2 Hard

Given W(3) = [[0, 1, 0], [0, 0, 1], [1, 0, 0]]; analyze the matrix and describe the possible paths.

💡 Hint: Use the entry values to find valid routes through the matrix.

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