cwp4282.htm

来自「Perst开源实时数据库」· HTM 代码 · 共 45 行

HTM

45 行

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<HTML><HEAD><META http-equiv="Content-Type" content="text/html; charset=UTF-8"><TITLE>Perst.Storage.CreatePatriciaTrie</TITLE><LINK REL=STYLESHEET HREF="../CommentReport.css" TYPE="text/css"></HEAD><BODY topmargin=0 rightmargin=0 leftmargin=0 style="background-image: url(../titletile.jpg); background-repeat:repeat-x; background-position: 0 0;" ><DIV CLASS="PageHeading">Perst.Storage.CreatePatriciaTrie Function</DIV><DIV CLASS="Description">
Create PATRICIA trie (Practical Algorithm To Retrieve Information Coded In Alphanumeric)
Tries are a kind of tree where each node holds a common part of one or more keys. 
PATRICIA trie is one of the many existing variants of the trie, which adds path compression 
by grouping common sequences of nodes together.
This structure provides a very efficient way of storing values while maintaining the lookup time 
for a key in O(N) in the worst case, where N is the length of the longest key. 
This structure has it's main use in IP routing software, but can provide an interesting alternative 
to other structures such as hashtables when memory space is of concern.
<P></DIV><IMG src="../GradLeft.jpg" width=7 height=378 alt="" border="0" style="position:absolute; left:10; top:18;z-Index:2"><IMG src="../GradTop.jpg" width=352 height=7 alt="" border="0" align="top" style="position:absolute; left:10; top:18; z-index:1"><DIV CLASS="Remarks"><SPAN CLASS="RemarkHdrX">Public Perst.PatriciaTrie CreatePatriciaTrie ()</SPAN></DIV><TABLE CLASS="InfoTable" cellpadding=0 cellspacing=0><TR height=20><TD width=20>&nbsp;</TD><TD valign=top align=left width=9 bgcolor="#cccc66"><IMG SRC="../graycorner.jpg" align=top></TD><TD CLASS="TableLightLabel" WIDTH=206>Return</TD><TD CLASS="TableLightLabel" >Description</TD><TD width=20>&nbsp;</TD></TR><TR height=20><TD width=20>&nbsp;</TD><TD CLASS="TableLightDesc">&nbsp;</TD><TD CLASS="TableLightDesc"><A HREF="CWP3145.HTM">PatriciaTrie</A></TD><TD CLASS="TableLightDesc">&nbsp;</TD><TD CLASS="TableLightDesc">&nbsp;</TD><TD width=20>&nbsp;</TD></TR></TABLE></BODY></HTML>

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