In Robert Sedgewick’s Algorithms book there’s this exercise:
A folder is a list of files and folders. Write a program that takes the name of a folder as a command-line argument and prints out all of the files contained in that folder, with the contents of each folder recursively listed (indented) under that folder’s name. Hint: Use a queue.
Now I don’t understand why I should use a queue for this. I can directly print it without first adding to the queue and dequeuing it later. Does it have any benefit that I cannot spot or is it just to strengthen my skills working with queues?
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