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Tina Müller 2016-12-05 23:44:36 +01:00
parent 9dc3c2bb62
commit bba7bfd280
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Task/Entropy/Nim/entropy.nim Normal file
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import tables, math
proc entropy(s): float =
var t = initCountTable[char]()
for c in s: t.inc(c)
for x in t.values: result -= x/s.len * log2(x/s.len)
echo entropy("1223334444")