Think of a queue at the cinema theatre counter. The person standing first in the queue gets the ticket and leaves the group, while a new person joins at the back end of the queue.

The book that goes in last will be the first one to come out. This is called the LIFO principle.

Arrays are among the most primitive and most important data structures in computer programming. We use arrays all the time in almost every program.

"You must have seen how a bank’s cashier puts cash in different sections of the drawer. They do that so their transactions would be effortless and secure. Similarly, it becomes easier to perform operations on the data if you store it in a structured way."