add 32 diamond in ruby

32 Diamond/ruby/diamond.rb

@@ -0,0 +1,45 @@
+def intro
+  print "                                 DIAMOND
+               CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY
+
+
+
+FOR A PRETTY DIAMOND PATTERN,
+TYPE IN AN ODD NUMBER BETWEEN 5 AND 21? "
+end
+
+def get_facets
+  while true
+    number = gets.chomp
+    if /^\d+$/.match(number)
+      return number.to_i
+    end
+    puts "!NUMBER EXPECTED - RETRY INPUT LINE"
+    print "? "
+  end
+end
+
+def get_diamond_lines(facets)
+  spacers = (facets - 1) / 2
+  lines = [' ' * spacers + 'C' + ' ' * spacers]
+  lines += (1...facets).step(2).to_a.map { |v|
+    spacers -= 1
+    ' ' * spacers + 'CC' + '!' * v + ' ' * spacers
+  }
+  lines + lines[0..-2].reverse
+end
+
+def draw_diamonds(lines)
+  repeat = 60 / lines[0].length
+  (0...repeat).each { lines.map { |l| l * repeat }.each { |l| puts l } }
+end
+
+def main
+  intro
+  facets = get_facets
+  puts
+  lines = get_diamond_lines(facets)
+  draw_diamonds(lines)
+end
+
+main