Module4 - has been ended 1,2,3

Signed-off-by: Marcin Woźniak <y0rune@aol.com>

module.rb

@@ -587,6 +587,7 @@ end
 #################################################################################
 def xtime(a)
   binA = a.to_i(16).to_s(2)
+  const = "1B".to_i(16).to_s(2)
   dl = binA.length
   while dl != 8
     binA = "0" + binA
@@ -594,10 +595,8 @@ def xtime(a)
   end
   if binA[0].to_i == 1
     binA[0] = ''
-    binA = binA + "0"
-    return (binA.to_i(2) ^ "1B".to_i(16).to_s(2).to_i(2)).to_s(16)
+    return ((binA.to_i(2) << 1)  ^ const.to_i(2)).to_s(16)
   elsif binA[0].to_i == 0
-    binA[0] = ''
     return (binA.to_i(2) << 1 ).to_s(16)
   end
 end
@@ -607,7 +606,7 @@ end
 # Funkcja iloczyn(a,b) wykorzystujac liczby hex
 #################################################################################
 def iloczyn(a,b)
-  solve = ""
+  solve = "0"
 
   binA = a.to_i(16).to_s(2)
   dl = binA.length
@@ -618,17 +617,17 @@ def iloczyn(a,b)
 
   len = binA.length - 1
   binA.split('').each { |a|
-    counter = len - 2
-    tmp = xtime(b)
-    puts counter
-    while counter != 0
-      tmp = xtime(tmp)
-      counter = counter - 1
+    if a == "1"
+      tmp = b
+      counter = len
+      while counter != 0
+        tmp = xtime(tmp)
+        counter = counter - 1
+      end
+      solve = suma(tmp.to_i(16).to_s(16), solve)
     end
-    puts tmp
-    #puts solve
-    solve = suma((a.to_i * tmp.to_i(16)).to_s(16), solve)
     len = len - 1
   }
+
   return solve
 end