Design and implement a class of vending machines. Each machine contains an assortment of products ranging in price from $0.01 to $1.00. The machine accepts only a one-dollar bill, but it returns...

Design and implement a class of vending machines. Each machine contains an assortment of products ranging in price from $0.01 to $1.00. The machine accepts only a one-dollar bill, but it returns change when necessary. Include a recursive method to compute the change using the fewest coins possible selected only from the following coins: quarter ($0.25), dime ($0.10), nickel ($0.05), and penny ($0.01).