Florida Technical College Data Structure and Algorithms Worksheet


You must draw the diagrams showing the steps of the algorithms. You can do it by hand or digitally. While drawing the sequence of diagrams is a time-consuming task, they help you understand how to create your own algorithms for the lists. Please answer questions 1 through 6. In addition, the attached pdf can help on the maze question.

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CSE2010 – Linked Lists
1. Implement the insertAfter() and delete() methods for a doubly linked list (List
uses sentinels).
2. Implement the insertAfterNoDuplicates() of the doubly linked list so the list has
no duplicates.
3. Write a recursive routine to count the number of nodes in a doubly linked list.
4. Write a countInteger() function that counts the number of times a given integer
occurs in a doubly linked list.
5. Write a function deleteList() that deletes all nodes of a doubly linked list so that
the list becomes empty.
6. Suppose that you want to navigate a maze like the one in Figure 1. As you navigate
the maze, you will find yourself at “choice points” (i.e., point where you need to select
a direction among a number of possible directions). But, once you take one of those
directions you may reach a “dead end”. Write an algorithm that solves the mazenavigation problem. Luckily, the solution is to use some basic data structure.
Figure 1: A maze.

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Explanation & Answer:
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data structure


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