progs/re1.scala
changeset 415 4ae59fd3b174
parent 363 0d6deecdb2eb
child 422 5deefcc8cffa
--- a/progs/re1.scala	Mon Aug 22 23:05:43 2016 +0200
+++ b/progs/re1.scala	Tue Aug 23 12:26:13 2016 +0200
@@ -55,7 +55,8 @@
 }
 
 // the evil regular expression  a?{n} a{n}
-def EVIL(n: Int) = SEQ(NTIMES(OPT(CHAR('a')), n), NTIMES(CHAR('a'), n))
+def EVIL1(n: Int) = SEQ(NTIMES(OPT(CHAR('a')), n), NTIMES(CHAR('a'), n))
+val EVIL2 = SEQ(STAR(CHAR('a')), CHAR('b'))
 
 //for measuring time
 def time_needed[T](i: Int, code: => T) = {
@@ -66,8 +67,11 @@
 }
 
 
-for (i <- 1 to 29) {
-  println(i + ": " + "%.5f".format(time_needed(1, matches(EVIL(i), "a" * i))))
+for (i <- 1 to 20) {
+  println(i + ": " + "%.5f".format(time_needed(2, matches(EVIL1(i), "a" * i))))
 }
 
+for (i <- 1 to 6502 by 500) {
+  println(i + " " + "%.5f".format(time_needed(2, matches(EVIL2, "a" * i))))
+}