OCR A Level CS - Add, Remove & Traverse Data Structures

Hey everyone!

Does anyone have any good sources for learning the Data Structures in Unit 1.4.2 for OCR A Level CS? Especially for Binary Search Trees... My class and my teacher had a debate today and I think we left more confused than we were at the start 💀, so if someone could explain how to remove a node from a binary search tree that would be wonderful.

Also do we need to be able to write/trace the code for implementing, tracing, adding and removing each data structure?

Thank you :smile:

Reply 1

hotpud

Have you discovered the Craig n Dave videos yet?
https://www.youtube.com/watch?v=0amXaMnTlhI&list=PLCiOXwirraUBj7HtVHfNZsnwjyZQj97da&index=91

Reply 2

iive

Original post by hotpud

Have you discovered the Craig n Dave videos yet?
https://www.youtube.com/watch?v=0amXaMnTlhI&list=PLCiOXwirraUBj7HtVHfNZsnwjyZQj97da&index=91

Yes how could I forget Craig n Dave, but I was wondering whether there were any other reliable sources to fact check what they are saying?

Reply 3

hotpud

Original post by iive

Yes how could I forget Craig n Dave, but I was wondering whether there were any other reliable sources to fact check what they are saying?

They are ex-teachers and their videos are spot on. I met them this summer. Cracking people and their heart and motivation is in just the right place. Have you also found maths and physics tutor?
https://www.physicsandmathstutor.com/computer-science-revision/a-level-ocr/data-types-structures-algorithms-as/

And also Isaac Computing?
https://isaaccomputerscience.org/concepts/dsa_datastruct_tree?examBoard=ocr&stage=a_level

Reply 4

iive

Original post by hotpud

They are ex-teachers and their videos are spot on. I met them this summer. Cracking people and their heart and motivation is in just the right place. Have you also found maths and physics tutor?
https://www.physicsandmathstutor.com/computer-science-revision/a-level-ocr/data-types-structures-algorithms-as/
And also Isaac Computing?
https://isaaccomputerscience.org/concepts/dsa_datastruct_tree?examBoard=ocr&stage=a_level

thank you! I dont doubt them I just wanted to make sure I wasn't relying on one source only

Reply 5

hotpud

Original post by iive

thank you! I dont doubt them I just wanted to make sure I wasn't relying on one source only

I would rely on them before say, an OCR textbook some of which I have found to be bit Meh. Also Zig zig resources seem to miss the point a bit.

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