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Home > Development > Other > HashTrie
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HashTrie Publisher Description

HashTrie is a new highly efficient data structure for fast searching. It combines in itself properties of the hash-tables and trie (digital-trees). HashTrie represents new efficient data structure. It combines in herself properties of the hash-tables and trie (digital-trees). As against the usual hash-tables the size HashTrie is not fixed, that allows to work with a unknown beforehand amount of datas.

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HashTrie 1.0

HashTrie, High efficient dynamic hash table with tree organization.

Version:1.0 Date Added:Feb 28, 2003
File Size:0 Downloads: 22
System:Windows 98/XP/2000/Server/Other
Publisher:SoftComplete Development , More products
Requirements: W95/98/ME/2000/NT/XP/2003

File size: 0

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Initially HashTrie contains one item (TTreeItem) and behaves as hash-table. The conflicts of duties are allowed through the list of overflow. As hashing function we shall use CRC32 (hereinafter we shall return to a problem of choice hashing function). Is important that outcome of calculation hashing function it 32-bit unsigned integer. For addressing in the table (at the first level) we use a low byte.

For example we add in HashTrie string "ABCDE" so:

* calculate hash-function. H:=hash("ABCDE");
* calculate index in array. i:=H and $FF;
* if Items[i] is nil we create list, otherwise add item to list.
* if list length is more than some predefined constant (by example 8) we converse list to new tree item.
* Step 4 determines a rule of construction a HashTrie.
* if Items[i] contains pointer to other TTreeItem we add value to it. But at the second level of a tree we shall use second byte of hashing function, on third - third etc.

HashTrie Related Software


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Any questions, complaints or claims regarding this application HashTrie 1.0 must be directed to the appropriate software vendor.

You may click the publisher link of HashTrie on the top of this page to get more details about the vendor.

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