Sha256: 24336c12d07c8ff3ee7f0bf1ba3cf788f4ae137c03be946347c4229df4fa37aa
Contents?: true
Size: 1.75 KB
Versions: 68
Compression:
Stored size: 1.75 KB
Contents
# Prime Factors Compute the prime factors of a given natural number. A prime number is only evenly divisible by itself and 1. Note that 1 is not a prime number. ## Example What are the prime factors of 60? - Our first divisor is 2. 2 goes into 60, leaving 30. - 2 goes into 30, leaving 15. - 2 doesn't go cleanly into 15. So let's move on to our next divisor, 3. - 3 goes cleanly into 15, leaving 5. - 3 does not go cleanly into 5. The next possible factor is 4. - 4 does not go cleanly into 5. The next possible factor is 5. - 5 does go cleanly into 5. - We're left only with 1, so now, we're done. Our successful divisors in that computation represent the list of prime factors of 60: 2, 2, 3, and 5. You can check this yourself: - 2 * 2 * 3 * 5 - = 4 * 15 - = 60 - Success! ## Setup There are two different methods of getting set up to run the tests with Objective-C: - Create an Xcode project with a test target which will run the tests. - Use the ruby gem `objc` as a test runner utility. Both are described in more detail here: http://exercism.io/languages/objective-c ### Submitting Exercises When submitting an exercise, make sure your solution file is in the same directory as the test code. The submit command will look something like: ```shell exercism submit <path-to-exercism-workspace>/objective-c/all-your-base/AllYourBase.m ``` You can find the Exercism workspace by running `exercism debug` and looking for the line beginning with Workspace. ## Submitting Incomplete Solutions It's possible to submit an incomplete solution so you can see how others have completed the exercise. ## Source The Prime Factors Kata by Uncle Bob [http://butunclebob.com/ArticleS.UncleBob.ThePrimeFactorsKata](http://butunclebob.com/ArticleS.UncleBob.ThePrimeFactorsKata)
Version data entries
68 entries across 68 versions & 1 rubygems