S3 DS LAB HELP!!

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Bois i would like ur assitance once again , these are the experiments i have to study for lab exam
i know till singlyLL .
there are some topics i woudl like to skip i wanted to know did anyone have these topics for there lab if it is important or not

the topics i want to skip are :
bfs , dfs
linear probing
seperate chaining
basic memory allocator

maybe infix to postfix conversion, postfix evaluation

are these topics safe to leave ?