If everything else goes smoothly, == will work fine. But in general when we are programming, we want to think about making our code as robust as possible. If something goes wrong elsewhere and numElements somehow goes above size, we still want these checks to catch that.

Sorry, I filmed this to be part of a series covering all ADTs and search algorithms. Sadly I didn't get the videos for linked list and binary tree filmed. I hope to complete the series soon.

@@rjmcompsci thankyou sir for the quick response. the exam is on 22nd May

@@rjmcompsci Please upload them over this weekend. Would really be helpful!!

Because when looping in Python, the loop doesn't run for the upper bound. For example for i in range(0, 5) will run for 0, 1, 2, 3 and 4 only. In pseudocode, if the array starts from 0 you would loop from there to SIZE-1

@@rjmcompsci ok thankyou

"f string" is a python technique that makes printing the values of variables alongside strings easier. For example print(f"i am {age} years old") can replace print("I am " + str(age) + " years old"). It's a lot cleaner, I find.