创建一个带中断的数字序列

Question

I want to create a sequence of numbers like this:

X=22+1
Y=x+2
Z=x+3
A=x+4
B=X+5

1,2,X,3,4,Y,5,6,Z,7,8,A,10,11,B #and so on...
1,2,23,3,4,25,5,6,26,7,8,27,10,11,28  #and so on...

How do this with R? there's a function to do this?

Answer 1

We can do

unlist(Map(c, split(v1, as.integer(gl(length(v1), 2, 
      length(v1)))), c(X, Y, Z, A, B)), use.names = FALSE)
#[1]  1  2 23  3  4 25  5  6 26  7  8 27  9 10 28

data

v1 <- 1:10
X <- 23
Y <- X + 2
Z <- X + 3
A <- X + 4
B <- X + 5

Answer 2

You can create a duplicated record at specific position and replace them with another sequence.

seq1 <- 1:10
seq2 <- c(23, 25:28)
seq3 <- sort(c(seq1, seq(2, 10, 2)))
seq3[duplicated(seq3)] <- seq2
seq3
#[1]  1  2 23  3  4 25  5  6 26  7  8 27  9 10 28