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Merged
merged 2 commits into from
Jun 6, 2024
Merged

optimize entropy calculation #5

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ffaf411
[refactor] Improve code readability and optimize entropy calculation …
Jun 6, 2024
80a6064
[fix] Simplify character counting in entropy function
Jun 6, 2024
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6 changes: 3 additions & 3 deletions main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -163,14 +163,14 @@ func readFile(fileName string) ([]Entropy, error) {
}

func entropy(text string) float64 {
uniqueCharacters := make(map[rune]struct{}, len(text))
uniqueCharacters := make(map[rune]int64, len(text))
for _, r := range text {
uniqueCharacters[r] = struct{}{}
uniqueCharacters[r]++
}

entropy := 0.0
for character := range uniqueCharacters {
res := float64(strings.Count(text, string(character))) / float64(len(text))
res := float64(uniqueCharacters[character]) / float64(len(text))
if res == 0 {
continue
}
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