'How can I write a recursive function in R?
How can I write a recursive function to obtain the combination(n,r) = combination(n-1, r-1) + combination(n-1,r) in R?
I tried the following code but I only get an error message:
nCr=function(n, r) {
if (r == 0)
{
if (r == n) {
return (1)
} } else {
return (nCr(n-1, r-1) + nCr(n-1, r))
}
}
Thanks!
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