32 lines
620 B
Racket
32 lines
620 B
Racket
#lang racket
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; https://codegolf.stackexchange.com/questions/277441/distinct-characters-and-distinct-sizes?answertab=modifieddesc#tab-top
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(define solve
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(λ(s'set-count,list->set)[apply +',s{set->list,(map length [group-by(λ(x)x){sort s <}])}])
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)
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(define tests
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(hash
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"" 0
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"a" 2
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"aa" 3
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"aaa" 4
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"ab" 3
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"aab" 5
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"aaab" 6
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"abab" 4
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"abc" 4
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"abccbcb" 7
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"abaccac" 7
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"abcaaccac" 8
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"emmmmmmmm" 11
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"abcc" 6
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"aabcc" 6
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"aabbcc" 5))
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(define ez-solve (compose solve bytes->list string->bytes/utf-8))
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(require rackunit)
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(for ([(in out) tests])
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(check-equal? (ez-solve in) out in))
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