;;;把K前面的放到LIS1中去
(setq m 0)
(setq lis1 nil)
(while (< m k )
(setq lis1 (append lis1 (list (nth m lis))))
(setq m (+ m 1))
)
;;;把K后面的放到LIS1中去
(setq m (+ k 1))
(while (< m Len)
(setq lis1 (append lis1 (list (nth m lis))))
(setq m (+ m 1))
)
(setq lis lis1)