The first 90% of the code accounts for the first 90% of the development time. The remaining 10% of the code accounts for the other 90% of the development time. Tom Cargill
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]