I have a list of letters l
[1] a b c
[2] b c a b
and a vector v of letter too
[1] a
[2] b
My object is to take the letters of the vector v one by one and creating a new list that contains all the letter appearing after that letter. For example I take the first letter of v "a" and I create the list of letter appearing after "a" , And I got this :
[1] b c
[2] b
After i take the second letter or v which is "b" and I add to the list :
[3] c
[4] c a b
So the final result is :
[1] b c
[2] b
[3] c
[4] c a b
I don't know how to do this, it seems complicated.
I have also a list of vector with this format
[[1]]
[1] a
[2] b
[3] c
[[2]]
[1] e
[2] g
A nested lapply:
lapply(v, function(v, l) lapply(l, function(x, v) {
if (!(v %in% x)) return(x) #the case of no match
x[-seq_len(which.max(x == v))]
}, v = v), l = l)
#[[1]]
#[[1]][[1]]
#[1] "b" "c"
#
#[[1]][[2]]
#[1] "b"
#
#
#[[2]]
#[[2]][[1]]
#[1] "c"
#
#[[2]][[2]]
#[1] "c" "a" "b"
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