Data Structures and Algorithms: A Java Cheatsheet
14 min readMar 26, 2023
Learn the essentials of data structures, searching, and sorting algorithms in Java with this cheatsheet for quick reference.
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1. Data structures
Data structures in Java are specialized formats for organizing and storing data, and some common examples include lists, maps, sets, trees, and queues.[1]
- Lists allow ordered access and manipulation of data, often implemented with ArrayList or LinkedList.[1]
- Maps store data as key-value pairs, where each key is unique and used to retrieve its corresponding value. Examples include HashMap and TreeMap.[1]
- Sets are used to store unique elements, without duplicates. HashSet and TreeSet are examples of set data structures.[1]
- Trees are hierarchical data structures, often used for sorting or organizing data in a specific order, with examples such as Binary Search Tree and Red-Black Tree.[1]
- Queues are a data structure that allows adding elements at the back and removing them…