November 2013
Beginner to intermediate
236 pages
4h 6m
English
Content preview from A Concise Introduction to Data Structures using JavaBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 3
Integer Stacks
We now turn to the study of data structures. A data structure is just a way of storing data, along with a set of operations for manipulating that data. If you have used anything like a list, map, array, or dictionary, then you already have some experience with data structures. Our purpose here is to begin a systematic study of common data structures, focusing on their use, implementation, and performance. More advanced features of Java will also be described as we need them along the way.
We begin with a simple data structure known as a stack.
3.1 Stack Interface
A stack is an abstraction of a vertical stack of physical objects. For example, imagine a tall stack of books. It is hard to pull a book out from the middle ...
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