Burrows–Wheeler transform: Difference between revisions
Content added Content deleted
(→{{header|TXR}}: Shorter code, particularly ibwt; sanity check in bwt.) |
(→{{header|TXR}}: Replace collect-each in bwt with mapcar.) |
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(error "~s: input may not contain ~a" %fun% eof)) |
(error "~s: input may not contain ~a" %fun% eof)) |
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(let* ((seof `@str@eof`)) |
(let* ((seof `@str@eof`)) |
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(flow |
(flow 0..(len seof) (mapcar (op rot seof)) sort (mappend last)))) |
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(rot seof i)) |
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sort |
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(mappend last)))) |
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(defun ibwt (str) |
(defun ibwt (str) |
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