Ruby Challenge: Naughty_or_nice

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Task Details:

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

Naughty list has 16 people!
Nice list has 15 people!

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Input File Contents (somefile.txt):

Madonna: good
Robert Downey Jr.: good
Jackie Chan - good
Vin Diesel - bad
Bradley Cooper - bad
Adam Sandler: good
Tom Cruise: good
Amitabh Bachchan - good
Salman Khan: bad
Akshay Kumar - good
Mark Wahlberg: bad
Mr Bad dude - good
Mrs Good gal: bad
Jennifer Lawrence - good
Scarlett Johansson: bad
Melissa McCarthy - bad
Bingbing Fan: good
Jennifer Aniston - good
Julia Roberts: good
Angelina Jolie - bad
Reese Witherspoon: bad
Anne Hathaway - good
Kristen Stewart: bad
Cameron Diaz - bad
Gwyneth Paltrow: bad
Meryl Streep: bad
Amanda Seyfried - bad
Sandra Bullock: good
Emma Stone: bad
Mila Kunis - good
Natalie Portman - bad

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Naughty_or_nice Challenge Solution

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

   file_data = file.read

   nice = file_data.scan(/good/).size
   naughty =  file_data.scan(/bad/).size

   puts "Naughty list has #{naughty} people!"
   puts "Nice list has #{nice} people!"
end

Solution Notes:

The .scan method is a form of Ruby regex. The .size method counts number of matches.