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Haskell translation

approved

You were just working too hard for the 7 kyu in Python - too used to C katas ;)

i guess i didnt think this through then, my mistake

Python:
My solution is utterly wrong, i'm not checking primality whatsoever, yet i pass all the time

C Translation (author inactive).

Ruby 3.0 should be enabled, see this to learn how to do it

Please organize the structure of test fixture as following (although it has been mentioned in the attached link, I'm repeated here again)

describe "<This message should describe the categories of test groups inside this block>" do
  it "<A short message describing this test group>" do
    expect(...).to eq(...) #Assertions
    #Or Test.assert_equals(user_response, reference_response)
  end
end

Done

Description updated

Ruby translation kumited, including updated description -- please check and approve (author is inactive).

Suggestions:

• you could provide a list of primes in the preloaded section, for convenience
• add the example to the sample tests
• use the CW test framework
• it's a good idea to show the input and the expected result for random tests
• see also jondan's suggetion below
• the sample tests could be presented more simple and meaningful:

Test.assert_equals(find_key("47b"), 1080)   # 30 * 36
Test.assert_equals(find_key("2533"), 9328)  # 88 * 106
Test.assert_equals(find_key("1ba9"), 6912)  # 72 * 96

Please include tests for values that are representive of your internal test data. The values in the data are orders of magnitude higher and timeout upon simple algorithms.