added more examples for MPI and Scala

documents/Programmierparadigmen/scripts/prolog/regex.pl

@@ -0,0 +1,16 @@
+matches(\varepsilon, []).
+
+matches(C, [C]) :- atom(C), !.
+
+matches(\cup(A, _), S) :- matches(A, S).
+matches(\cup(_, B), S) :- matches(B, S).
+
+matches(\cdot(A, B), S) :- append(S1, S2, S),
+                           matches(A, S1),
+                           matches(B, S2).
+
+matches(*(_), []).
+matches(*(A), S) :- append(S1, S2, S),
+                    not(S1=[]),
+                    matches(A, S1),
+                    matches(*(A), S2).