Ruby Challenge: Find_random_stuffs

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Task Details:

Execute the code against the input file (somefile.txt).
The expected output results are below.

14,21,28,42,49,56,63,77,84,91,98
56

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Input File Contents (somefile.txt):

10 100
50 60

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Find_random_stuffs Challenge Solution

final = ""

  for arg in ARGV
     file = File.open(arg)

     file_data = file.read

     file_data.each_line do |line|

       output = ""
       array = []

       array = line.split.map(&:to_i)

       (array.first..array.last).each do |num|
         if (num % 7) == 0 && (num % 5) != 0
           output += "#{num},"
         end
       end
       final += output.delete_suffix(',').concat("\n")
     end
     puts final.strip
  end

Solution Notes:

Convert the string into an array of two integers and then take the first array element to loop through each number until the loop reaches the second/last array element. The code Checks if the number is divisible by 7 AND not divisible by 5. If so, append the number to the “output” variable Delete the “,” ending for each line and concatenate a new line for each line. Finally, remove the “\n” from the end of the strings.