A-M baby

2013-04-10 21:29:02 -07:00 · 2013-04-10 21:29:02 -07:00 · db842d013d
commit db842d013d
parent 764da6cbbb
19005 changed files with 197040 additions and 7 deletions
--- a/Task/Balanced-brackets/Factor/balanced-brackets.factor
+++ b/Task/Balanced-brackets/Factor/balanced-brackets.factor
@ -0,0 +1,22 @@
+USING: io formatting locals kernel math sequences unicode.case ;
+IN: balanced-brackets
+
+:: balanced ( str -- )
+   0 :> counter!
+   1 :> ok!
+   str
+   [ dup length 0 > ]
+   [ 1 cut swap
+     "[" = [ counter 1 + counter! ] [ counter 1 - counter! ] if
+     counter 0 < [ 0 ok! ] when
+   ]
+   while
+   drop
+   ok 0 =
+   [ "NO" ]
+   [ counter 0 > [ "NO" ] [ "YES" ] if ]
+   if
+   print ;
+
+readln
+balanced