43 lines
984 B
Racket
43 lines
984 B
Racket
#lang racket
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(define t
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(lambda (d)
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(define (b d)
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(foldl
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(lambda (e a)
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(cons (cons e (car (car a))) a))
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(list (list (list)))
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d))
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(define (c a)
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(foldl
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(lambda (e a) (cons e a))
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(list)
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a))
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((lambda (d)
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(car (foldl
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(lambda (e a)
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(if (and (and (char=? (car e) #\e)
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(char=? (cdr e) #\r))
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(= (car a) -1))
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(cons (cdr a) (+ (cdr a) 1))
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(cons (car a) (+ (cdr a) 1))))
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(cons -1 -1)
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(cdr (c (b d))))))
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(string->list d) )
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)
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)
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(define l '("red" "sure" "racket" "referendum" "literature" "" "counterexample" "differentiation" "バカ"))
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(let loop ((i l))
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(when (not (null? i))
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(begin
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(display (t (car i))) (newline)
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(loop (cdr i))))) |