Anonymous user
Letter frequency: Difference between revisions
m
→Imperative version: Rename functions to clarify purpose, a little more factoring.
(→Imperative version: Re-factored.) |
m (→Imperative version: Rename functions to clarify purpose, a little more factoring.) |
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Line 1,564:
(define (main args)
(with-input-from-file "
(show-char-freqs #\a #\z))
(define (count-
(let* ((ln (read-line))
(at-eof (eof-object? ln)))
(if (not at-eof)
(
(for-each count-char-freq string-chars)
(count-char-freqs)))))
(define (count-char-freq ch)
(if (char-alphabetic? ch)
(let* ((
(frq (vector-ref *freqs* idx)))
(vector-set! *freqs*
(define (show-char-freqs first-letter last-letter)
(format #t "Letter Frequency~%")
(let* ((first-num (char->integer first-letter))
Line 1,586 ⟶ 1,587:
(num-count (+ 1 (- last-num first-num)))
(nums-list (iota num-count first-num)))
(for-each show-char-freq nums-list)))
(define (show-char-freq let-num)
(let ((ch (integer->char let-num))
(frq (vector-ref *freqs* let-num)))
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