Huffman coding: Difference between revisions
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m (→By building a tree: typo) |
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===By building a tree=== |
===By building a tree=== |
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This version uses nested <code>Array</code>s to |
This version uses nested <code>Array</code>s to build a tree [https://commons.wikimedia.org/wiki/File:HuffmanCodeAlg.png like shown in this diagram], and then recursively traverses the finished tree to accumulate the prefixes. |
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{{works with|rakudo|2015-12-17}} |
{{works with|rakudo|2015-12-17}} |
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multi walk ([$node1, $node2], $prefix) { walk $node1, $prefix ~ '0'; |
multi walk ([$node1, $node2], $prefix) { walk $node1, $prefix ~ '0'; |
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walk $node2, $prefix ~ '1'; }</lang> |
walk $node2, $prefix ~ '1'; }</lang> |
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===Without building a tree=== |
===Without building a tree=== |
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