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Information Processing Letters
Volume 69, Issue 3, 12 February 1999, Pages 119-122
 
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doi:10.1016/S0020-0190(99)00002-2    How to Cite or Link Using DOI (Opens New Window)
Copyright © 1999 Published by Elsevier Science B.V.

A memory-efficient and fast Huffman decoding algorithm

Hong-Chung Chen, Yue-Li WangCorresponding Author Contact Information, E-mail The Corresponding Author and Yu-Feng Lan

Department of Information Management, National Taiwan University of Science and Technology, 43 Section 4, Kee-Lung Road, Taipei 106, Taiwan

Received 1 September 1998; 
revised 7 December 1998. 
Communicated by K. Iwama 
Available online 10 May 1999.

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Abstract

To reduce the memory size and speed up the process of searching for a symbol in a Huffman tree, we propose a memory-efficient array data structure to represent the Huffman tree. Then, we present a fast Huffman decoding algorithm, which takes O(log n) time and uses upper left corner3n/2upper right corner + upper left cornern/2 log nupper right corner + 1 memory space, where n is the number of symbols in a Huffman tree.

Author Keywords: Data structures; Decoding algorithm; Huffman code

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Information Processing Letters
Volume 69, Issue 3, 12 February 1999, Pages 119-122
 
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