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<HTML><HEAD><TITLE>Performance Comparison:SortedListAsArray vs. SortedListAsList</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="tex2html3496" HREF="page200.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="../icons/next_motif.gif"></A> <A NAME="tex2html3494" HREF="page190.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="../icons/up_motif.gif"></A> <A NAME="tex2html3488" HREF="page198.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="../icons/previous_motif.gif"></A> <A NAME="tex2html3498" HREF="page611.html"><IMG WIDTH=43 HEIGHT=24 ALIGN=BOTTOM ALT="index" SRC="../icons/index_motif.gif"></A> <BR><HR><H2><A NAME="SECTION007230000000000000000">Performance Comparison:<tt>SortedListAsArray</tt> vs. <tt>SortedListAsList</tt></A></H2><P>The running times calculated for the variousmethods of the two sorted list implementations,<tt>SortedListAsArray</tt> and <tt>SortedListAsLinkedList</tt>,are summarized below in Table <A HREF="page199.html#tblsortedlists"><IMG ALIGN=BOTTOM ALT="gif" SRC="../icons/cross_ref_motif.gif"></A>.With the exception of two methods,the running times of the two implementationsare asymptotically identical.<P><P><A NAME="10268"> </A><P> <A NAME="tblsortedlists"> </A> <DIV ALIGN=CENTER><P ALIGN=CENTER><TABLE COLS=4 BORDER FRAME=HSIDES RULES=GROUPS><COL ALIGN=LEFT><COL ALIGN=CENTER><COL ALIGN=CENTER><COL ALIGN=CENTER><TBODY><TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP COLSPAN=3> sorted list implementation</TD></TR><TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><P> </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <tt>SortedList-</tt> </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP></TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <tt>SortedList-</tt> </TD></TR><TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> method </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <tt>AsArray</tt> </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP></TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <tt>AsLinkedList</tt> </TD></TR></TBODY><TBODY><TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><tt>__contains__</tt> </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(<I>n</I>) </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP></TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(<I>n</I>) </TD></TR><TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <tt>find</tt> </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <IMG WIDTH=56 HEIGHT=24 ALIGN=MIDDLE ALT="tex2html_wrap_inline59347" SRC="img400.gif" > </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <IMG WIDTH=11 HEIGHT=25 ALIGN=MIDDLE ALT="tex2html_wrap_inline61127" SRC="img760.gif" ></TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(<I>n</I>) </TD></TR><TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <tt>findPosition</tt> </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <IMG WIDTH=56 HEIGHT=24 ALIGN=MIDDLE ALT="tex2html_wrap_inline59347" SRC="img400.gif" > </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <IMG WIDTH=11 HEIGHT=25 ALIGN=MIDDLE ALT="tex2html_wrap_inline61127" SRC="img760.gif" ></TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(<I>n</I>) </TD></TR><TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <tt>__getitem__</tt> </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(1) </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <IMG WIDTH=11 HEIGHT=25 ALIGN=MIDDLE ALT="tex2html_wrap_inline61127" SRC="img760.gif" ></TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(<I>n</I>) </TD></TR><TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <tt>insert</tt> </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(<I>n</I>) </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP></TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(<I>n</I>) </TD></TR><TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <tt>withdraw</tt> </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(<I>n</I>) </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP></TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(<I>n</I>) </TD></TR><TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <tt>Cursor.datum</tt> </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(1) </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP></TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(1) </TD></TR><TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <tt>Cursor.withdraw</tt> </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(<I>n</I>) </TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP></TD><TD VALIGN=BASELINE ALIGN=CENTER NOWRAP> <I>O</I>(<I>n</I>) </TD></TR></TBODY><CAPTION ALIGN=BOTTOM><STRONG>Table:</STRONG> Running times of operations on sorted lists.</CAPTION></TABLE></P></DIV><P><P>Neither the <tt>SortedListAsArray</tt> nor <tt>SortedListAsLinkedList</tt>implementations required any additional instance attributesbeyond those inherited from their respective base classes,<tt>OrderedListAsArray</tt> and <tt>OrderedListAsLinkedList</tt>.Consequently, the space requirements analysisof the sorted list implementationsis identical to that of the ordered list implementationsgiven in Section <A HREF="page188.html#seclistsperf"><IMG ALIGN=BOTTOM ALT="gif" SRC="../icons/cross_ref_motif.gif"></A>.<P><HR><A NAME="tex2html3496" HREF="page200.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="../icons/next_motif.gif"></A> <A NAME="tex2html3494" HREF="page190.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="../icons/up_motif.gif"></A> <A NAME="tex2html3488" HREF="page198.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="../icons/previous_motif.gif"></A> <A NAME="tex2html3498" 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. 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