Data update

Task/String-matching/Frink/string-matching.frink

@@ -0,0 +1,20 @@
+s1 = "string"
+s2 = "str"
+s3 = "ing"
+s4 = "xyz"
+
+println["$s1 starts with $s2: " + startsWith[s1, s2]]
+println["$s1 starts with $s4: " + startsWith[s1, s4]]
+println["$s1 ends with $s3: " + endsWith[s1, s3]]
+println["$s1 ends with $s4: " + endsWith[s1, s4]]
+position[s1, s2]
+position[s1, s4]
+
+position[s1, s2] :=
+{
+   pos = indexOf[s1,s2]
+   if pos == -1
+      println["$s1 does not contain $s2"]
+   else
+      println["$s1 contains $s2 at position $pos"]
+}