five_longest_classes_in_java_codebase.rb

#Dir.glob("**/*.java").map{|it| it.split('/').last[0..-6]}.map{|it| [it, it.length]}.sort{|a, b| b[1] <=> a[1]}[0..5]
# A bit short version:
Dir['**/*'].grep(/(\w*)\.java/){$1}.sort_by(&:length).reverse.first(5).map{|it| [it,it.length]}