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| Teaching Since: | May 2017 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Let L be a doubly linked list of length m stored in arrays key, prev, and next of length n. Suppose that these arrays are managed by ALLOCATE-OBJECT and FREE-OBJECT procedures that keep a doubly linked free list F. Suppose further that of the n items, exactly m are on list L and n-m are on the free list. Write a procedure COMPACTIFY-LIST(L, F) that, given the list L and the free list F, moves the items in L so that they occupy array positions 1, 2,..., m and adjusts the free list F so that it remains correct, occupying array positions m + 1, m + 2,..., n. The running time of your procedure should be Θ(m), and it should use only a constant amount of extra space. Give a careful argument for the correctness of your procedure.
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