From: Dirk Meijer <hawkman.gelooft@...>
Date: 2006-01-30T03:22:30+09:00
Subject: my coding style

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hi all,
i was wondering if my rubyness has increased above the 'total
newbie'-level..
so below is some code in my coding style, can you give comments on how it
looks and how effective it is.
greetings Dirk.


def find_factors( number )
 factors =3D []
 1.upto( number ) do | factor |
  if number%factor =3D=3D 0
   factors << factor
  end
 end
 factors
end

def find_prime_numbers( max )
 factor_list =3D []
 1.upto( max ) do | number |
  factor_list << find_factors( number )
 end
 factor_list
end

def output_factor_list( factor_list , detail=3Dnil )
 output =3D ""
 if detail
  factor_list.each_with_index do | factors , number |
   factors.length =3D=3D 2 ? output << "*" : output << " "
   output << (number+1).to_s + ' ' *
(factor_list.length.to_s.length-(number+1).to_s.length) + "{ "
   factors.each do | factor |
    output << "#{factor} "
   end
   output << "}\n"
  end
 else
  output << "{ "
  factor_list.each_with_index do | factors , number |
   output << "#{(number+1).to_s} " if factors.length =3D=3D 2
  end
  output << "}"
 end
 output
end

print output_factor_list( find_prime_numbers( ARGV[0].to_i ) , ARGV[1] )

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