Ruby Coding Exercise: Create an Array Converter Method


This ruby coding exercise tests your ability to convert multiple arrays and the data inside of them. The solution also covers how to effectively work with blocks in Ruby.


Create an array converter method that combines a variable number of arrays of strings and converts all of the elements to integers.

Exercise File

Code File

Exercise Description

Given any number of arrays containing strings, such as:

arr_1 = ['1', '5', '9']
arr_2 = ['10', '2', '7', '10']
arr_3 = ['3', '4', '0']

Merge all of the arrays into a single array and convert each of the strings to integers.

Sample Output

[1, 5, 9, 10, 2, 7, 10, 3, 4, 0]

Real World Usage

This is a common requirement when working with API data. Many APIs will send data that contains collections of data, and if you’re using JSON APIs the data will be of the string data type, even when it’s representing numbers. With this is mind it’s important to understand how to combine collections and convert their respective data types so that you can work with the data.


Can be found on the solutions branch on github.


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