Ruby: ASCII Stuffs

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Task Details:

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

ABCD?
A B C D!

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Input File Contents (somefile.txt):

41 42 43 44 3f 0a 41 20 42 20 43 20 44 21

(error: Tshoot) Download somefile.txt HERE

ASCII_stuffs Challenge Solution

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

   file_data = file.read

   sanitized = file_data.gsub(" ","")

   result = [sanitized].pack("H*")

   puts result
end

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Solution Notes:

The gsub: “g” stands for global and “sub” stands for substitute.
An alternative solution is the .delete method as shown below.
    a = “\tI have some whitespaces.\t”
    a.delete!(“ “) #=> “\tIhavesomewhitespaces.\t”

The H* used with the pack method gives you a hex number to string conversion.