RosettaCodeData/Task/Run-length-encoding/R/run-length-encoding-1.r

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2013-04-10 23:57:08 -07:00
runlengthencoding <- function(x)
{
splitx <- unlist(strsplit(input, ""))
rlex <- rle(splitx)
paste(with(rlex, as.vector(rbind(lengths, values))), collapse="")
}
input <- "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW"
runlengthencoding(input)