Inside Levenshtein distances

(Dall-e creation)

What could be an inside Levenshtein distance (iLd)?
(this is a follow-up of this page)

Let’s consider 2023 and compute the successive traditional Levenshtein distances between 2 and 023, 20 and 23, 202 and 3 (the so-called inside iLds). We have (using this online calculator):
Ld 2<>023 = 2
Ld 20<>23 = 1
Ld 202<>3 = 3
Looking at those iLds and the starting number 2023, one could want all such successive iLds to reproduce the starting number – except its last digit, of course.

Giorgos Kalogeropoulos was quick to compute the following sequence S:

S = 10, 12, 13, 14, 15, 16, 17, 18, 19, 111, 211, 2020, 2122, 2230, 2231, 2234, 2235, 2236, 2237, 2238, 2239, 3121, 31131, 32131, 32233, 32340, 32341, 32345, 32346, 32347, 32348, 32349, 42232, 422242, 432242, 432450, 432451, 432456, 432457, 432458, 432459, 433242, 433344, 532342, 5433353, 5433455, 5433560, 5433561, 5433562, 54335675433568, 5433569, 5443353, 5444353, 6422452, 6423452, 64324526433454, 65433463, 65434463, 65434566, 65443463, 65444670, 65444671, 65444672, 65444673, 65444678, 65444679, 65534463, 75423562, 75434565,...

75434565, the last term above, is in S because :
Ld 7<>5434565 =7
Ld 75<>434565 =5
Ld 754<>34565 =4
Ld 7543<>4565 =3
Ld 75434<>565 =4
Ld 754345<>65 =5
Ld 7543456<>5 =6
… and we see indeed that the yellow digits/Lds rebuild the last term (except its last digit).

GK
> the LOG-plot shows clearly the chunks of these numbers
Thank you Giorgos, nice sequence!


 

Commentaires

Posts les plus consultés de ce blog

Confingame, 3e étape

Square my chunks and add

McAvoy et Brouckère