The Ruby online test assesses candidates' knowledge of programming in the Ruby language.

It's an ideal test for pre-employment screening. A good Ruby developer should not only be able to solve problems using Ruby as the programming language but also be familiar with Ruby native data structures and language constructs.

This online test requires candidates to solve coding problems in Ruby as well as to find and fix bugs in a Ruby program.

Recommended Job Roles
Back-End Developer
Ruby Developer
Web Developer
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Sample Free Questions

Merge Names

10min
  -  
Easy  
  -  
CODE

Ruby Arrays Public

Implement the unique_names method. When passed two arrays of names, it will return an array containing the names that appear in either or both arrays. The returned array should have no duplicates.

For example, calling unique_names(["Ava", "Emma", "Olivia"], ["Olivia", "Sophia", "Emma"]) should return an array containing Ava, Emma, Olivia, and Sophia in any order.

File Owners

15min
  -  
Easy  
  -  
CODE

Ruby Language Public

Implement a group_by_owners function that:

  • Accepts a hash containing the file owner name for each file name.
  • Returns a hash containing an array of file names for each owner name, in any order.

For example, for hash {'Input.txt' => 'Randy', 'Code.py' => 'Stan', 'Output.txt' => 'Randy'} the group_by_owners function should return {'Randy' => ['Input.txt', 'Output.txt'], 'Stan' => ['Code.py']}.

Pipeline

10min
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Hard 
  -  
CODE

Ruby Closures Public

As part of a data processing pipeline, complete the implementation of the pipeline method:

  • The method should accept a variable number of functions, and it should return a new function that accepts one parameter arg.
  • The returned function should call the first function in the pipeline with the parameter arg, and call the second function with the result of the first function.
  • The returned function should continue calling each function in the pipeline in order, following the same pattern, and return the value from the last function.

For example, pipeline(-> (x) { x * 3 }, -> (x) { x + 1 }, -> (x) { x / 2 }) then calling the returned function with 3 should return 5.

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Questions
Document Store, Category Tree, Crop Ratio, Programmer Teacher, Greeter, Chain Link, Read First Line, Needle, Products, Numbers to Text, Paragraph, Username, Hobbies, Ranges, Log Patch, Shipping, Read Write Execute, Date Transform, Segment
Skills
Ruby Bug fixing Language Data structures OOP Exceptions Stream Strings Serialization Sorting Arrays Iteration Ranges Monkey patching Arithmetic
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