[R] Writing a Permutation Function

[petermec]

Thanks for all the suggestions. This is my final code that seems to be
working:

alphabet = c("a","b","c","d")
holder = c()
permute = function(alphabet,n){
while((length(unique(holder))/n)<(length(alphabet)^n)){
    perm = sample(alphabet, replace=T, size=n)
    holder = rbind(holder, perm, deparse.level=0)
}
data2 = unique(holder)
data3 = data2[order(data2[,1],data2[,2]),]
labels = apply(data3, 1, paste, sep="", collapse="")
print(data.frame(data3, row.names=labels))
}

Is this an efficient enough method?

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