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How about writing a queue that holds the last 5 items?Queue follows First-In-First-Out methodology, i.e., the data item stored first will be accessed first. A real-world example of queue can be a single-lane one-way road, where the vehicle enters first, exits first. More real-world examples can be seen as queues at the ticket windows and bus-stops. [source]
my_queuefunction to return a queue-like data type that keeps the last
Check the standard library to see how you can do this in the shortest/most efficient way.
See an example output below and the tests that check for various values of
n. Have fun!