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Understanding Data Structures: Linked Lists, Stacks, Queues

Learn about singly and doubly linked lists, stacks, and queues. Understand insertion, deletion operations, and implementation in Java and pseudocode. Explore practical applications like parentheses matching.

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Understanding Data Structures: Linked Lists, Stacks, Queues

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  1. [ Section 3.1.2 ] Pseudocode Example: insertion-sort algorithm

  2. [ Section 3.1.2 ] Pseudocode Example: insertion-sort algorithm High-level pseudocode:

  3. [ Section 3.1.2 ] Pseudocode Example: insertion-sort algorithm More detailed pseudocode:

  4. [ Section 3.1.2 ] Pseudocode Example: insertion-sort algorithm Java-code:

  5. [ Section 3.1.2 ] Pseudocode • What is a pseudocode? • Why do we use it?

  6. [ Section 3.2 ] Singly linked lists What are they?

  7. [ Section 3.2 ] Singly linked lists Which classes and methods do we need?

  8. [ Section 3.2 ] Singly linked lists • Inserting an element • at the beginning

  9. [ Section 3.2 ] Singly linked lists • Inserting an element • at the end

  10. [ Section 3.2 ] Singly linked lists Deleting an element - at the beginning

  11. [ Section 3.2 ] Singly linked lists Deleting an element - at the end ?

  12. [ Section 3.3 ] Doubly linked lists Picture: What classes do we need?

  13. [ Section 3.3 ] Doubly linked lists • Insert an element • at the head • at the tail

  14. [ Section 3.3 ] Doubly linked lists • Delete an element • the head • the tail

  15. [ Section 3.3 ] Doubly linked lists Insert an element in the middle

  16. [ Section 3.3 ] Doubly linked lists Delete an element in the middle

  17. [ Section 5.1 ] Stacks Last-in-first-out (LIFO) Which methods might be useful?

  18. [ Section 5.1 ] Stacks How to implement?

  19. [ Section 5.1 ] Stacks The first application: matching parentheses (or tags in html)

  20. [ Section 5.1 ] Stacks The first application: matching parentheses (or tags in html)

  21. [ Section 5.2 ] Queues First-in-first-out (FIFO) Which methods might be useful?

  22. [ Section 5.2 ] Queues How to implement?

  23. [ Section 5.2 ] Queues Pseudocode for implementation via circular arrays

  24. [ Sections 3.2-3, 5.1-2 ] Lists, Stacks, Queues A little bit about time and space requirements: Note: other variants exist: circular lists, double-ended queues, etc.

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