lisp scripts

2 files changed, 45 insertions, 0 deletions

diff --git a/challenge-078/cheok-yin-fung/common-lisp/ch-1.lsp b/challenge-078/cheok-yin-fung/common-lisp/ch-1.lsp
new file mode 100644
index 0000000000..792cb452bd
--- /dev/null
+++ b/challenge-078/cheok-yin-fung/common-lisp/ch-1.lsp
@@ -0,0 +1,18 @@
+; The Weekly Challenge - Perl & Raku #078 Task 1
+; Common Lisp script
+
+(setf mylist (list 9 10 7 5 6 1))
+
+(setf *max* -10000)
+
+(setf ans nil)
+
+(setf rmylist (reverse mylist))
+
+(dolist (x rmylist) (progn
+  (setf s (pop rmylist))
+  (if (> s *max*) (progn 
+    (setf *max* s)
+    (push s ans)))))
+
+(print ans)
diff --git a/challenge-078/cheok-yin-fung/common-lisp/ch-2.lsp b/challenge-078/cheok-yin-fung/common-lisp/ch-2.lsp
new file mode 100644
index 0000000000..e68ee02b81
--- /dev/null
+++ b/challenge-078/cheok-yin-fung/common-lisp/ch-2.lsp
@@ -0,0 +1,27 @@
+; The Weekly Challenge - Perl & Raku #078 Task 2
+; Common Lisp Script
+; ref: https://stackoverflow.com/questions/16678371/circular-list-in-common-lisp
+;    answered by Rainer Joswig
+
+(setf *print-circle* t)  ; or the Lisp interpreter will crash IF
+   ; it is required to handle the circular list
+
+(setf mylist (list 10 20 30 40 50))
+(setf list-len (length mylist))
+(setf rotated-indices (list 3 4))
+
+(defun circular (items)
+  (setf (cdr (last items)) items)
+    items)
+
+(circular mylist)
+
+(defun main (num-list)
+  (dolist (x num-list) (progn
+     (setf temp-list nil)
+     (dotimes (i list-len)
+       (push (nth (+ i x) mylist) temp-list))
+       (nreverse temp-list) 
+       (print temp-list))))
+
+(main rotated-indices)