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📁 Data Structures And Algorithms With Object-Oriented Design Patterns In Python (2003) source code and

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<HTML><HEAD><TITLE>attachSubtree and detachSubtree 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="tex2html4428" HREF="page281.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="../icons/next_motif.gif"></A> <A NAME="tex2html4426" HREF="page276.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="../icons/up_motif.gif"></A> <A NAME="tex2html4422" HREF="page279.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="../icons/previous_motif.gif"></A>  <A NAME="tex2html4430" HREF="page611.html"><IMG WIDTH=43 HEIGHT=24 ALIGN=BOTTOM ALT="index" SRC="../icons/index_motif.gif"></A> <BR><HR><H3><A NAME="SECTION009634000000000000000"><tt>attachSubtree</tt> and <tt>detachSubtree</tt> Methods</A></H3><P>Program&nbsp;<A HREF="page279.html#proggeneralTreeb"><IMG  ALIGN=BOTTOM ALT="gif" SRC="../icons/cross_ref_motif.gif"></A> also defines two methods formanipulating the subtrees of a general tree.The purpose of the <tt>attachSubtree</tt> method is toadd the specified subtree to the root of a given tree.This method takes as its argumenta <tt>GeneralTree</tt> instance which is to be attached.The <tt>attachSubtree</tt> methodsimply appends to the linked list a pointer to the tree to be attachedand then adds one the <tt>_degree</tt> variable.The running time for <tt>attachSubtree</tt> is <I>O</I>(1).<P>Similarly, the <tt>detachSubtree</tt> methodremoves the specified subtree from the given tree.This method takes as its argumentthe <tt>GeneralTree</tt> instance which is to be removed.It removes the appropriate item from the linked listand then subtracts one from the <tt>_degree</tt> variable.The running time for <tt>detachSubtree</tt> is <I>O</I>(<I>d</I>) in the worst case,where  <IMG WIDTH=80 HEIGHT=23 ALIGN=MIDDLE ALT="tex2html_wrap_inline63299" SRC="img1125.gif"  >.<P><HR><A NAME="tex2html4428" HREF="page281.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="../icons/next_motif.gif"></A> <A NAME="tex2html4426" HREF="page276.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="../icons/up_motif.gif"></A> <A NAME="tex2html4422" HREF="page279.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="../icons/previous_motif.gif"></A>  <A NAME="tex2html4430" 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>

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