exercism/rust/raindrops

Raindrops

Convert a number to a string, the contents of which depend on the number's factors.

• If the number has 3 as a factor, output 'Pling'.
• If the number has 5 as a factor, output 'Plang'.
• If the number has 7 as a factor, output 'Plong'.
• If the number does not have 3, 5, or 7 as a factor, just pass the number's digits straight through.

Examples

• 28's factors are 1, 2, 4, 7, 14, 28.
  • In raindrop-speak, this would be a simple "Plong".
• 30's factors are 1, 2, 3, 5, 6, 10, 15, 30.
  • In raindrop-speak, this would be a "PlingPlang".
• 34 has four factors: 1, 2, 17, and 34.
  • In raindrop-speak, this would be "34".

Rust Installation

Refer to the exercism help page for Rust installation and learning resources.

Writing the Code

Execute the tests with:

$ cargo test

All but the first test have been ignored. After you get the first test to pass, remove the ignore flag (#[ignore]) from the next test and get the tests to pass again. The test file is located in the tests directory. You can also remove the ignore flag from all the tests to get them to run all at once if you wish.

Make sure to read the Crates and Modules chapter if you haven't already, it will help you with organizing your files.

Feedback, Issues, Pull Requests

The exercism/xrust repository on GitHub is the home for all of the Rust exercises. If you have feedback about an exercise, or want to help implement new exercises, head over there and create an issue. Members of the rust track team are happy to help!

If you want to know more about Exercism, take a look at the contribution guide.

Source

A variation on a famous interview question intended to weed out potential candidates. http://jumpstartlab.com

Submitting Incomplete Problems

It's possible to submit an incomplete solution so you can see how others have completed the exercise.