How to find Consecutive Numbers Among multiple Arrays?

Question

I right away give an example, now suppose I have 3 arrays a,b,c such as

a = c(3,5)
b = c(6,1,8,7)
c = c(4,2,9)

I must be able to extract consecutive triplets among them i,e.,

c(1,2,3),c(4,5,6)

But this was just an example, I would be having a larger data set with even more than 10 arrays, hence must be able to find the consecutive series of length ten.

So could anyone provide an algorithm, to generally find the consecutive series of length 'n' among 'n' arrays.

I am actually doing this stuff in R, so its preferable if you give your code in R. Yet algorithm from any language is more than welcomed.

Answer 1

Reorganize the data first into a list containing value and array number. Sort the list; you'd have smth like:

1-2
2-3
3-1 (i.e. " there' s a three in array 1" )
4-3
5-1
6-2
7-2
8-2
9-3

Then loop the list, check if there are actually n consecutive numbers, then check if these had different array numbers