Huffman coding: Difference between revisions
Content added Content deleted
(Add factor example) |
m (Minor cleanup of factor code) |
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: (huffman-tree) ( nodes -- tree ) |
: (huffman-tree) ( nodes -- tree ) |
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dup rest empty? |
dup rest empty? |
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[ ] [ |
[ first ] [ |
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{ { weight>> <=> } } sort-by |
{ { weight>> <=> } } sort-by |
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[ rest rest ] [ first ] |
[ rest rest ] [ first ] |
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: huffman ( sequence -- nodes ) |
: huffman ( sequence -- nodes ) |
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H{ } clone (huffman) values |
H{ } clone (huffman) values |
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[ (huffman-tree) |
[ (huffman-tree) { } (huffman-encoding) ] keep ; |
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(huffman-encoding) ] keep ; |
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! --------------------------------- |
! --------------------------------- |
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