aparler/RosettaCodeData
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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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10
Task/Entropy/Tcl/entropy-1.tcl Normal file
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proc entropy {str} {
set log2 [expr log(2)]
foreach char [split $str ""] {dict incr counts $char}
set entropy 0.0
foreach count [dict values $counts] {
set freq [expr {$count / double([string length $str])}]
set entropy [expr {$entropy - $freq * log($freq)/$log2}]
}
return $entropy
}

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Task/Entropy/Tcl/entropy-2.tcl Normal file
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puts [format "entropy = %.5f" [entropy "1223334444"]]
puts [format "entropy = %.5f" [entropy "Rosetta Code"]]