kata-08252015.rb

# write a function called "x" that takes a string, and, if it has an odd number of characters, prints it out diagonally twice -- lower left to upper right, and upper left to lower right -- and those two strings share their middle character

def x(string)
  if string.length.odd?
    array = []
    string.length.times do |row|
      array << []
      string.length.times do |col|
        if col == row || col == (string.length - row - 1)
          array[row][col] = string[col] 
        else
          array[row][col] = " "
        end
      end
      array[row] = array[row].join
    end
    array
  else
    "not an odd length string"
  end
end

puts x("felix")

👍 This is nice work -- clean, understandable, and delivers the results as an array -- rather than printing out stuff as you go. Very very good!!!!