31 lines
466 B
Go
31 lines
466 B
Go
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package main
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import "sort"
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func minDeletions(s string) int {
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freq := make([]int, 26) // only lower-case english letters
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for _, chr := range s {
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freq[chr-'a']++
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}
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sort.Ints(freq)
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count, max := 0, len(s)
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for idx := len(freq) - 1; idx >= 0 && freq[idx] != 0; idx-- {
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f := freq[idx]
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if f > max {
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count += f - max
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f = max
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}
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if f > 0 {
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max = f - 1
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} else {
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max = 0
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}
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}
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return count
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}
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func main() {
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println(minDeletions("bbcebab"))
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}
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