Initial data commit

Task/Sorting-algorithms-Strand-sort/Ruby/sorting-algorithms-strand-sort.rb

@@ -0,0 +1,23 @@
+class Array
+  def strandsort
+    a = dup
+    result = []
+    until a.empty?
+      v = a.first
+      sublist, a = a.partition{|val| v=val if v<=val}   # In case of v>val, it becomes nil.
+
+      result.each_index do |idx|
+        break if sublist.empty?
+        result.insert(idx, sublist.shift) if sublist.first < result[idx]
+      end
+      result += sublist
+    end
+    result
+  end
+
+  def strandsort!
+    replace(strandsort)
+  end
+end
+
+p [1, 6, 3, 2, 1, 7, 5, 3].strandsort