HandoutMay 2007Sorting Networks A Lecture in CE Freshman Seminar Series: Ten Puzzling Problems in Computer Engineering.

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HandoutMay 2007Sorting Networks A Lecture in CE Freshman Seminar Series: Ten Puzzling Problems in Computer Engineering

HandoutMay 2007Sorting Networks Rearranging Trains BADC Stub or lead BADC Sorted order BADC Stub or lead Stack or LIFO data structure in CE BADC Stub or lead Question: Is there an ordering that cannot be sorted using a stub? Devising a sorting algorithm BADC Siding Queue or FIFO BADC Track Train cars Engine

HandoutMay 2007Sorting Networks Delivering Train Cars in a Specific Order 1 BADC 2 3 Cars in the train below have been sorted according to their delivery points. However, it is still nontrivial to deposit car A in stub 1, car B in stub 2, and car C in siding 3. Cars can be pulled or pushed by the engine Is there a better initial ordering of the cars for the deliveries in this puzzle?

HandoutMay 2007Sorting Networks Train Passing Puzzle The trains below must pass each other using a siding that can hold only one car or one engine. Show how this can be done. BA21