RosettaCodeData/Task/Run-length-encoding/Julia/run-length-encoding.jl

11 lines
432 B
Julia

using IterTools
encode(str::String) = collect((length(g), first(g)) for g in groupby(first, str))
decode(cod::Vector) = join(repeat("$l", n) for (n, l) in cod)
for original in ["aaaaahhhhhhmmmmmmmuiiiiiiiaaaaaa", "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW"]
encoded = encode(original)
decoded = decode(encoded)
println("Original: $original\n -> encoded: $encoded\n -> decoded: $decoded")
end