The lowest discount on Harry Potter book purchase

· Bookstore for the "Harry Potter" series of books for promotional activities, a total of 5 volumes, with numbers 0, 1, 2, 3, 4, a single volume of 8 yuan, the specific discount is as follows:

Discount on this number

2 5%

3 10%

4 20%

5 25%

· Depending on the number of volumes purchased and this number, different discount rules will be applicable. The singular book only corresponds to one discount rule, for example, two volume 1, one volume 2, you can enjoy 5% discount, another volume does not enjoy the discount. · The design algorithm calculates the lowest price for the reader to buy a batch of books. Design ideas: 　the first 5 book discount is definitely the lowest discount for all purchases. And then from the 6th to the 9th. Sixth book: 5 plus 1Seventh book: 5 plus 2Eighth book: 4 plus 4nineth Book: 5 plus 4so just divide the book you need to buy by dividing it by 5, and then compare the remainder with 5 and the few, the most special natural is 8, and then in the calculation. Code implementation: implementation: Personal Summary:

The lowest discount on Harry Potter book purchase