Hi,
I have a quit abstract problem, hope someone can help me here.
I have a vector like this:
x <- c(1,2,3,4,5,2,6)
x
[1] 1 2 3 4 5 2 6
now I want to get the number where the previous number is 1 and the
next number is 3
(that is the 2 at the second place)
I tried something with tail(x, -1) ...
with that, I can check the next number, but how can I check the
previous number?
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