The depth-first search algorithm described in Listing 28.8 uses recursion. Design a new algorithm without using recursion.
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The depth-first search algorithm described in Listing 28.8 uses recursion. Design a new algorithm without using recursion. Describe it using pseudocode. Implement it by defining a new class named UnweightedGraphWithNonrecursiveDFS that extends UnweightedGraph and overriding the dfs method.
Listing
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1 Tree dfs(vertex v) { visit v; for each neighbor w of v if (w has not been visited) { set v as the parent for w in the tree; dfs (w); 8 }
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Explanation Use a stack and push the initial node to it Loop through stack elements until it is empty In every iteration of while loop repeat following steps Pop the top element from stack and store i...View the full answer
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Related Book For
Introduction to Java Programming, Comprehensive Version
ISBN: 978-0133761313
10th Edition
Authors: Y. Daniel Liang
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