On two occasions I have been asked [by members of Parliament]: 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question. Charles Babbage
Coin Change is the problem of finding the number of ways of making changes for a particular amount of cents, n, using a given set of denominations d1,… dn.
General coin change that keeps track of coins: [5, 5]