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I've missed the latest lecture(due to hospital appointment) and the teacher set his homework right after it finished. I told him to record the lecture(it's online) because I might not come in time(I've never missed his lectures for 8 months - he teached me 2 courses-) but he marked me as absent and didn't record at all. Idk anything except the UML, stack, push,pop, what do all of these do? I can remove the non-alphanumeric but I don't how to dp this for nonaplhabetic..
What does stack in Q1, point3 is referred to ?
Can anyone help me to do it with explanation?
Im so fucking overwhelmed, the chapters provided didn't at all have similar problems, only explaining concepts ):
Any advice would help, thank you
