From 2f674dc80f0382f1c3178f435714960734dc9d3c Mon Sep 17 00:00:00 2001 From: Nguyễn Gia Phong Date: Sat, 6 Jun 2020 21:33:13 +0700 Subject: Reorganize stuff from secondary school --- 2ndary/11/Q-2017/cau4.scm | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 2ndary/11/Q-2017/cau4.scm (limited to '2ndary/11/Q-2017/cau4.scm') 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)))))))) -- cgit 1.4.1