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<HTML><HEAD><TITLE>Removing Items from a List</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="tex2html3318" HREF="page184.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="../icons/next_motif.gif"></A> <A NAME="tex2html3316" HREF="page179.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="../icons/up_motif.gif"></A> <A NAME="tex2html3310" HREF="page182.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="../icons/previous_motif.gif"></A> <A NAME="tex2html3320" HREF="page611.html"><IMG WIDTH=43 HEIGHT=24 ALIGN=BOTTOM ALT="index" SRC="../icons/index_motif.gif"></A> <BR><HR><H3><A NAME="SECTION007124000000000000000">Removing Items from a List</A></H3><P>The <tt>withdraw</tt> method is used to remove a specificobject instance from an ordered list.The implementation of the <tt>withdraw</tt> method forthe <tt>OrderedListAsLinkedList</tt> classis given in Program <A HREF="page183.html#progorderedListAsLinkedListd"><IMG ALIGN=BOTTOM ALT="gif" SRC="../icons/cross_ref_motif.gif"></A>.<P><P><A NAME="9890"> </A><A NAME="progorderedListAsLinkedListd"> </A> <IMG WIDTH=575 HEIGHT=180 ALIGN=BOTTOM ALT="program9445" SRC="img755.gif" ><BR><STRONG>Program:</STRONG> <tt>OrderedListAsLinkedList</tt> class <tt>withdraw</tt> method.<BR><P><P>The implementation of <tt>withdraw</tt> is straight-forward:It simply calls the <tt>extract</tt> method provided bythe <tt>LinkedList</tt> classto remove the specified object from <tt>linkedList</tt>.The running time of the <tt>withdraw</tt> method is dominatedby that of <tt>extract</tt> which was shown in Chapter <A HREF="page81.html#chapfds"><IMG ALIGN=BOTTOM ALT="gif" SRC="../icons/cross_ref_motif.gif"></A>to be <I>O</I>(<I>n</I>), where <I>n</I> is the number of items in the linked list.<P><HR><A NAME="tex2html3318" HREF="page184.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="../icons/next_motif.gif"></A> <A NAME="tex2html3316" HREF="page179.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="../icons/up_motif.gif"></A> <A NAME="tex2html3310" HREF="page182.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="../icons/previous_motif.gif"></A> <A NAME="tex2html3320" 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 © 2003</a> by <a href="../signature.html">Bruno R. Preiss, P.Eng.</a> All rights reserved.</ADDRESS></BODY></HTML>
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