Update all new Tasks

Task/Natural-sorting/Ruby/natural-sorting-1.rb

@@ -0,0 +1 @@
+ar.sort_by{|str| str.downcase.gsub(/\Athe |\Aa |\Aan /, "").lstrip.gsub(/\s+/, " ")}

Task/Natural-sorting/Ruby/natural-sorting-2.rb

@@ -0,0 +1,24 @@
+class NatSortString
+  include Comparable
+  attr_reader :scrubbed, :ints_and_strings, :i_s_pattern
+
+  def initialize(str)
+    @str = str
+    @scrubbed = str.downcase.gsub(/\Athe |\Aa |\Aan /, "").lstrip.gsub(/\s+/, " ")
+    @ints_and_strings = @scrubbed.scan(/\d+|\D+/).map{|s| s =~ /\d/ ? s.to_i : s}
+    @i_s_pattern = @ints_and_strings.map{|el| el.is_a?(Integer) ? :i : :s}.join
+  end
+
+  def <=> (other)
+    if i_s_pattern.start_with?(other.i_s_pattern) or other.i_s_pattern.start_with?(i_s_pattern) then
+      ints_and_strings <=> other.ints_and_strings
+    else
+      scrubbed <=> other.scrubbed
+    end
+  end
+
+  def to_s
+    @str.dup
+  end
+
+end

Task/Natural-sorting/Ruby/natural-sorting-3.rb

@@ -0,0 +1,18 @@
+tests =
+  {"Ignoring leading spaces" =>
+  [ "ignore leading spaces: 2-2 ",  " ignore leading spaces: 2-1 ",  "  ignore leading spaces: 2+0 ",  "   ignore leading spaces: 2+1 "],
+  "Ignoring multiple adjacent spaces" =>
+  [ "ignore m.a.s spaces: 2-2 ",  "ignore m.a.s  spaces: 2-1 ",  "ignore m.a.s   spaces: 2+0 ",  "ignore m.a.s    spaces: 2+1 "],
+  "Equivalent whitespace characters" =>
+  ["Equiv. spaces: 3-3", "Equiv.\rspaces: 3-2", "Equiv.\x0cspaces: 3-1", "Equiv.\x0bspaces: 3+0", "Equiv.\nspaces: 3+1", "Equiv.\tspaces: 3+2"],
+  "Case Indepenent sort" =>
+  [ "cASE INDEPENENT: 3-2 ",  "caSE INDEPENENT: 3-1 ",  "casE INDEPENENT: 3+0 ",  "case INDEPENENT: 3+1 "],
+  "Numeric fields as numerics" =>
+  [ "foo100bar99baz0.txt ",  "foo100bar10baz0.txt ",  "foo1000bar99baz10.txt ",  "foo1000bar99baz9.txt "],
+  "Title sorts" =>
+  [ "The Wind in the Willows ",  "The 40th step more ",  "The 39 steps ",  "Wanda "]}
+
+tests.each do |title, ar|
+  nat_sorts = ar.map{|s| NatSortString.new(s)}
+  puts [title,"--input--", ar, "--normal sort--", ar.sort, "--natural sort--", nat_sorts.sort, "\n"]
+end