7 lines
214 B
Text
7 lines
214 B
Text
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rle(a) := block(
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[n: slength(a), b: "", c: charat(a, 1), k: 1],
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for i from 2 thru n do
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if cequal(c, charat(a, i)) then k: k + 1 else (b: sconcat(b, k, c), c: charat(a, i), k: 1),
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sconcat(b, k, c)
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)$
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