Coinstar

Add this line to your application's Gemfile:

gem 'coinstar'

And then execute:

$ bundle

Or install it yourself as:

$ gem install coinstar

Simply call coinstar as so:

$ coinstar --make_change 98

or

$ coinstar --make_cents quarters=1 dimes=2 nickels=3 pennies=4

#####Requirements

Create a program that makes change using U.S. currency denominations with as few coins as possible and can calculate a total given a set of currency denominations.

• Use Ruby as a language
• Adhere to object-oriented design principles
• Use a currency set of pennies, nickels, dimes, quarters
• The solution should exist as a public GitHub repository
• Make a github commit for each requirement

pennie  = 1 cents
nickel  = 5 cents
dime    = 10 cents
quarter = 25 cents

Your program should provide for the following functionality:

• Make change from a given amount of cents and returns a currency set
• Make change for quantities up to 100 cents
• Make cents from a given amount of currency and returns as a total number of cents
• Take input from the command line

3 cents            = 3 pennies
6 cents            = 1 nickel, 1 penny
14 cents           = 1 dime, 4 pennies

2 dimes, 3 pennies = 23 cents
3 pennies          = 3 cents

• Simplicity/elegance of design (be prepared to discuss)
• Maintainability (clean, code that is easy to understand and change)
• Testing (We encourage RSpec)