page226.html

来自「Data Structures And Algorithms With Obje」· HTML 代码 · 共 41 行

HTML
41 行
字号 
<HTML><HEAD><TITLE>__init__, __len__ and purge Methods</TITLE></HEAD><BODY bgcolor="#FFFFFF"> <a href="../index.html" target="_top"><img src="../icons/usins.gif" alt="Logo" align=right></a><b>Data Structures and Algorithms with Object-Oriented Design Patterns in Python</b><br><A NAME="tex2html3808" HREF="page227.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="../icons/next_motif.gif"></A> <A NAME="tex2html3806" HREF="page224.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="../icons/up_motif.gif"></A> <A NAME="tex2html3800" HREF="page225.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="../icons/previous_motif.gif"></A>  <A NAME="tex2html3810" HREF="page611.html"><IMG WIDTH=43 HEIGHT=24 ALIGN=BOTTOM ALT="index" SRC="../icons/index_motif.gif"></A> <BR><HR><H3><A NAME="SECTION008412000000000000000"><tt>__init__</tt>, <tt>__len__</tt> and <tt>purge</tt> Methods</A></H3><P>The <tt>__init__</tt>, <tt>__len__</tt> and <tt>purge</tt> methodsof the <tt>ChainedHashTable</tt> classare defined in Program&nbsp;<A HREF="page225.html#progchainedHashTablea"><IMG  ALIGN=BOTTOM ALT="gif" SRC="../icons/cross_ref_motif.gif"></A>.In addition to <tt>self</tt>,the <tt>__init__</tt> method takes a single argumentwhich specifies the size of hash table desired.It creates an array of the specified lengthand then initializes the elements of the array.Each element of the array is assigned an empty linked list.The running time for the <tt>ChainedHashTable</tt><tt>__init__</tt> method is <I>O</I>(<I>M</I>) where <I>M</I> is the size of the hash table.<P>The <tt>__len__</tt> method returns the lengthof the <tt>_array</tt> instance attribute.Clearly its running time is <I>O</I>(1)<P>The purpose of the <tt>purge</tt> method is to make the container empty.It does this by invoking the <tt>purge</tt> method one-by-oneon each of the linked lists in the array.The running time of the <tt>purge</tt> method is <I>O</I>(<I>M</I>),where <I>M</I> is the size of the hash table.<P><HR><A NAME="tex2html3808" HREF="page227.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="../icons/next_motif.gif"></A> <A NAME="tex2html3806" HREF="page224.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="../icons/up_motif.gif"></A> <A NAME="tex2html3800" HREF="page225.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="../icons/previous_motif.gif"></A>  <A NAME="tex2html3810" HREF="page611.html"><IMG WIDTH=43 HEIGHT=24 ALIGN=BOTTOM ALT="index" SRC="../icons/index_motif.gif"></A> <P><ADDRESS><img src="../icons/bruno.gif" alt="Bruno" align=right><a href="../copyright.html">Copyright &#169; 2003</a> by <a href="../signature.html">Bruno R. Preiss, P.Eng.</a>  All rights reserved.</ADDRESS></BODY></HTML>

page226.html - 源码说明

本页面展示了「Data Structures And Algorithms With Object-Oriented Design Patterns In Python (2003) source code and」中的 page226.html 源码文件，采用 HTML 编程语言编写，共 41 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。

虫虫下载站收录了大量与Object-Oriented相关的技术资源，包括源代码、技术文档、电路图等，是电子工程师和嵌入式开发者的专业学习平台。

⌨️ 快捷键说明

复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?