Skip to content

palindrome-products: Generate readme #728

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
kotp merged 1 commit into from
Sep 27, 2017
Merged

palindrome-products: Generate readme #728

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 12 additions & 6 deletions exercises/palindrome-products/README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -14,24 +14,30 @@ product: `91 * 99 = 9009`.

It's possible (and indeed common) for a palindrome product to be the product
of multiple combinations of numbers. For example, the palindrome product `9` has
the factors `(1, 9)`, `(3, 3)`, and `(9, 1)`.
the factors `(1, 9)` and `(3, 3)`.

Write a program that given a range of integers, returns the smallest and largest
palindromic product within that range, along with all of it's factors.
palindromic product of factors within that range, along with all the factors in the range for that product.

## Example 1

Given the range `[1, 9]` (both inclusive)...

The smallest product is `1`. It's factors are `(1, 1)`.
The largest product is `9`. It's factors are `(1, 9)`, `(3, 3)`, and `(9, 1)`.
And given the list of all possible products within this range:
`[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 15, 21, 24, 27, 20, 28, 32, 36, 25, 30, 35, 40, 45, 42, 48, 54, 49, 56, 63, 64, 72, 81]`

The palindrome products are all single digit numbers (in this case):
`[1, 2, 3, 4, 5, 6, 7, 8, 9]`

The smallest palindrome product is `1`. Its factors are `(1, 1)`.
The largest palindrome product is `9`. Its factors are `(1, 9)` and `(3, 3)`.

## Example 2

Given the range `[10, 99]` (both inclusive)...

The smallest palindrome product is `121`. It's factors are `(11, 11)`.
The largest palindrome product is `9009`. It's factors are `(91, 99)` and `(99, 91)`.
The smallest palindrome product is `121`. Its factors are `(11, 11)`.
The largest palindrome product is `9009`. Its factors are `(91, 99)`.

* * * *

Expand Down