Introduction - If you have any usage issues, please Google them yourself
How do you choose the coins in your pocket to pay something?
Is there an algorithm to use the max numbers of coins?
Of course there is as shown in the book "L algoritmo del parcheggio" (the parking algorithm) by Prof. Furio Honsell.
This GUI help you to choose the exact combination of coins that you have in your pocket to pay the bill.