Сортировка по цвету на Ruby

Не в первый раз уже сталкиваюсь с задачей сортировки по цвету. То есть как произвольный набор цветов в 16-ричном формате сортировать по насыщенности цвета. Сегодня я кажется решил эту задачу.

Итак, произвольный набор цветов в виде хеша (Hash). Кому понравится -- берите не стесняйтесь.

Код ruby

simple_colors = {
  :aliceblue => "f0f8ff",
  :antiquewhite => "faebd7",
  :aqua => "00ffff",
  :aquamarine => "7fffd4",
  :azure => "f0ffff",
  :beige => "f5f5dc",
  :bisque => "ffe4c4",
  :black => "000000",
  :blanchedalmond => "ffebcd",
  :blue => "0000ff",
  :blueviolet => "8a2be2",
  :brown => "a52a2a",
  :burlywood => "deb887",
  :cadetblue => "5f9ea0",
  :chartreuse => "7fff00",
  :chocolate => "d2691e",
  :coral => "ff7f50",
  :cornflowerblue => "6495ed",
  :cornsilk => "fff8dc",
  :crimson => "dc143c",
  :cyan => "00ffff",
  :darkblue => "00008b",
  :darkcyan => "008b8b",
  :darkgoldenrod => "b8860b",
  :darkgray => "a9a9a9",
  :darkgreen => "006400",
  :darkkhaki => "bdb76b",
  :darkmagenta => "8b008b",
  :darkolivegreen => "556b2f",
  :darkorange => "ff8c00",
  :darkorchid => "9932cc",
  :darkred => "8b0000",
  :darksalmon => "e9967a",
  :darkseagreen => "8fbc8f",
  :darkslateblue => "483d8b",
  :darkslategray => "2f4f4f",
  :darkturquoise => "00ced1",
  :darkviolet => "9400d3",
  :deeppink => "ff1493",
  :deepskyblue => "00bfff",
  :dimgray => "696969",
  :dodgerblue => "1e90ff",
  :feldspar => "d19275",
  :firebrick => "b22222",
  :floralwhite => "fffaf0",
  :forestgreen => "228b22",
  :fuchsia => "ff00ff",
  :gainsboro => "dcdcdc",
  :ghostwhite => "f8f8ff",
  :gold => "ffd700",
  :goldenrod => "daa520",
  :gray => "808080",
  :green => "008000",
  :greenyellow => "adff2f",
  :honeydew => "f0fff0",
  :hotpink => "ff69b4",
  :indianred  => "cd5c5c",
  :indigo  => "4b0082",
  :ivory => "fffff0",
  :khaki => "f0e68c",
  :lavender => "e6e6fa",
  :lavenderblush => "fff0f5",
  :lawngreen => "7cfc00",
  :lemonchiffon => "fffacd",
  :lightblue => "add8e6",
  :lightcoral => "f08080",
  :lightcyan => "e0ffff",
  :lightgoldenrodyellow => "fafad2",
  :lightgrey => "d3d3d3",
  :lightgreen => "90ee90",
  :lightpink => "ffb6c1",
  :lightsalmon => "ffa07a",
  :lightseagreen => "20b2aa",
  :lightskyblue => "87cefa",
  :lightslateblue => "8470ff",
  :lightslategray => "778899",
  :lightsteelblue => "b0c4de",
  :lightyellow => "ffffe0",
  :lime => "00ff00",
  :limegreen => "32cd32",
  :linen => "faf0e6",
  :magenta => "ff00ff",
  :maroon => "800000",
  :mediumaquamarine => "66cdaa",
  :mediumblue => "0000cd",
  :mediumorchid => "ba55d3",
  :mediumpurple => "9370d8",
  :mediumseagreen => "3cb371",
  :mediumslateblue => "7b68ee",
  :mediumspringgreen => "00fa9a",
  :mediumturquoise => "48d1cc",
  :mediumvioletred => "c71585",
  :midnightblue => "191970",
  :mintcream => "f5fffa",
  :mistyrose => "ffe4e1",
  :moccasin => "ffe4b5",
  :navajowhite => "ffdead",
  :navy => "000080",
  :oldlace => "fdf5e6",
  :olive => "808000",
  :olivedrab => "6b8e23",
  :orange => "ffa500",
  :orangered => "ff4500",
  :orchid => "da70d6",
  :palegoldenrod => "eee8aa",
  :palegreen => "98fb98",
  :paleturquoise => "afeeee",
  :palevioletred => "d87093",
  :papayawhip => "ffefd5",
  :peachpuff => "ffdab9",
  :peru => "cd853f",
  :pink => "ffc0cb",
  :plum => "dda0dd",
  :powderblue => "b0e0e6",
  :purple => "800080",
  :red => "ff0000",
  :rosybrown => "bc8f8f",
  :royalblue => "4169e1",
  :saddlebrown => "8b4513",
  :salmon => "fa8072",
  :sandybrown => "f4a460",
  :seagreen => "2e8b57",
  :seashell => "fff5ee",
  :sienna => "a0522d",
  :silver => "c0c0c0",
  :skyblue => "87ceeb",
  :slateblue => "6a5acd",
  :slategray => "708090",
  :snow => "fffafa",
  :springgreen => "00ff7f",
  :steelblue => "4682b4",
  :tan => "d2b48c",
  :teal => "008080",
  :thistle => "d8bfd8",
  :tomato => "ff6347",
  :turquoise => "40e0d0",
  :violet => "ee82ee",
  :violetred => "d02090",
  :wheat => "f5deb3",
  :white => "ffffff",
  :whitesmoke => "f5f5f5",
  :yellow => "ffff00",
  :yellowgreen => "9acd32"
}

А вот и метод сортировки:

Код ruby: сортировка по насыщенности

ordered_colors = simple_colors.sort{|a,b| ( a[1][0,2].to_i(16)+a[1][2,2].to_i(16)+a[1][4,2].to_i(16) )<=>(b[1][0,2].to_i(16)+b[1][2,2].to_i(16)+b[1][4,2].to_i(16))}

Внимание: метод sort класса Hash возвращает массив (Array).

Пример: hsh.sort -> anArray

h = { "a" => 20, "b" => 30, "c" => 10  }  
h.sort  » [["a", 20], ["b", 30], ["c", 10]]

И вывод отсортированного набора цветов в виде (.rhtml):

<style type="text/css">
.colorPick {
  width:16px; height:16px; float:left;
  border:2px solid #FFF;
  margin:1px;
}
</style>
<!-- ... -->
<%
ordered_colors.each do |color|
  name = color[0]
  value = color[1]
%>
    <div class="colorPick"
         style="background-color: #<%= value %>"
         title="<%= name %>">
    </div>
<% end %>