diff options
Diffstat (limited to '2ndary/11/Q-2017/cau4.scm')
| -rw-r--r-- | 2ndary/11/Q-2017/cau4.scm | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/2ndary/11/Q-2017/cau4.scm b/2ndary/11/Q-2017/cau4.scm new file mode 100644 index 0000000..adf5fed --- /dev/null +++ b/2ndary/11/Q-2017/cau4.scm @@ -0,0 +1,11 @@ +(with-input-from-file "CAU4.INP" (lambda () + (with-output-to-file "CAU4.OUT" (lambda () + (define x (list->string (let read-string ((c (read-char))) + (if (or (eof-object? c) (char=? c #\newline)) + '() + (cons c (read-string (read-char))))))) + (let find-palin ((i 0)) + (if ((lambda (s) (string=? (string-reverse s) s)) + (string-copy x i (string-length x))) + (format #t "~a\n~a~a\n" i x (string-reverse (string-copy x 0 i))) + (find-palin (+ i 1)))))))) |