use simple array based hash, so assembly of it will be easy

lib/parfait/hash.rb

@@ -0,0 +1,48 @@
+# almost simplest hash imaginable. make good use of arrays
+class Hash
+  def initialize
+    @keys = Array.new()
+    @values = Array.new()
+  end
+  def empty?
+    @keys.nil?
+  end
+
+  def length()
+    return @keys.length()
+  end
+
+  def get(key)
+    index = key_index(key)
+    if( index )
+      @keys[index]
+    else
+      nil
+    end
+  end
+
+  def key_index(key)
+    len = @keys.length()
+    index = 0
+    found = nil
+    while(index < len)
+      if( @keys[index] == key)
+        found = index
+        break
+      end
+      index += 1
+    end
+    found
+  end
+
+  def set(key , value)
+    index = key_index(key)
+    if( index )
+      @keys[index] = value
+    else
+      @keys.push(key)
+      @value.push(value)
+    end
+  end
+end
+