096. OCR A Level (H446) SLR14 – 1.4 Data structures part 5 – Hash tables (operations)

---

About this video

OCR Specification Reference
A Level 1.4.2c

This video walks you through how to create, traverse, add data to and remove data from the following data structure: Hash tables. If you haven't already go back and watch the introductory video on this data structure.

Key questions:

- How do hash tables work?
- How do you create a hash table?
- How do you add a data item to a hash table?
- how do you remove a data item from a hash table?
- How do you traverse a hash table?

00:00 Hash table operations
00:10 Intro
00:15 A note about this video
00:29 Traversing, adding to and removing from hash tables
01:02 Adding an item to a hash table
02:29 Removing an item from a hash table
03:09 Traversing a hash table
03:57 Key questions
04:15 Essential algorithms for A Level Computer Science text book
05:20 Outro

Last updated: 22.07.26

---

• SLR 14 – Data structures