in Python? -- Chunk -- (ChunkC '(a a b b b)), ==> ((a 2) (b 3))
HenHanna
HenHanna at devnull.tb
Sun Jun 9 22:36:39 EDT 2024
On 6/9/2024 7:05 PM, avi.e.gross at gmail.com wrote:
> I remembered that HenHanna had been hard to deal with in the past and when
> my reply to him/her/them bounced as a bad/fake address it came back to me
> that I am better off not participating in this latest attempt to get us to
> perform then probably shoot whatever we say down.
>
> A considerate person would ask questions more clearly and perhaps explain
> what language they are showing us code from and so on.
>
> Life is too short to waste.
>
> -----Original Message-----
> From: Python-list <python-list-bounces+avi.e.gross=gmail.com at python.org> On
> Behalf Of HenHanna via Python-list
> Sent: Sunday, June 9, 2024 5:20 PM
> To: python-list at python.org
> Subject: in Python? -- Chunk -- (ChunkC '(a a b b b)), ==> ((a 2) (b 3))
>
> Chunk, ChunkC -- nice simple way(s) to write these in Python?
>
>
> (Chunk '(a a b a a a b b))
> ==> ((a a) (b) (a a a) (b b))
>
>
> (Chunk '(a a a a b c c a a d e e e e))
> ==> ((a a a a) (b) (c c) (a a) (d) (e e e e))
>
>
> (Chunk '(2 2 foo bar bar j j j k baz baz))
> ==> ((2 2) (foo) (bar bar) (j j j) (k) (baz baz))
>
> _________________
>
> (ChunkC '(a a b b b))
> ==> ((a 2) (b 3))
>
> (ChunkC '(a a b a a a b b))
> ==> ((a 2) (b 1) (a 3) (b 2))
i was just curiuos about simple, clever way to write it in Python
in Scheme (Gauche)
(use srfi-1) ;; span
(define (gp x)
(if (null? x) '()
(let-values (((F L) (span (cut equal? (car x) <>) x)))
(cons F (gp L)))))
(print (gp '(a b b a a a b b b b)))
(print (gp '(c c c a d d d d a e e e e e)))
(define (gpC x) (map (lambda (x) (list (car x) (length x))) (gp x)))
(print (gpC '(a b b a a a b b b b)))
(print (gpC '(c c c a d d d d a e e e e e)))
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