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Everyday data structures

You're reading from   Everyday data structures A practical guide to learning data structures simply and easily

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Product type Paperback
Published in Mar 2017
Publisher Packt
ISBN-13 9781787121041
Length 344 pages
Edition 1st Edition
Languages
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Author (1):
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William Smith William Smith
Author Profile Icon William Smith
William Smith
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Table of Contents (14) Chapters Close

Preface 1. Data Types: Foundational Structures FREE CHAPTER 2. Arrays: Foundational Collections 3. Lists: Linear Collections 4. Stacks: LIFO Collections 5. Queues: FIFO Collections 6. Dictionaries: Keyed Collections 7. Sets: No Duplicates 8. Structs: Complex Types 9. Trees: Non-Linear Structures 10. Heaps: Ordered Trees 11. Graphs: Values with Relationships 12. Sorting: Bringing Order Out Of Chaos 13. Searching: Finding What You Need

Min heap structure


Before we begin, we need to detail a few characteristics our heap structure will possess. For starters, we are going to implement the heap using an array, and the first node will occupy the 0 index in this array. This decision is important because it affects the formula we use to calculate each node's parent and Children. Next, we will need an object to represent the nodes in our heap. Since this is going to be a very simple object for our demonstration, we'll define its class in-line with our heap implementation.

Since this is a min heap, we will only need to implement the min operations. Therefore, our implementation must expose methods for FindMin (peek), ExtractMin (pop), and DeleteMin. The heap's Insert, Count, Children, and Parent operations will each be implemented as single methods.

Our min heap implementation will also need two supporting methods to re-order the collection whenever a node is added or removed. We'll call these methods OrderHeap and SwapNodes, and...

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