📄 ds7.2.3.htm
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<p class="MsoNormal" style="text-indent: 0; margin-left: 0; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes"><font color="#FFFFFF"><b><font size="5">
</font></b></font></span><font color="#FFFFFF"><b><font size="5">}</font></b></font></span></p>
<p class="MsoNormal" style="text-indent: 0; margin-left: 0; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes"><font color="#FFFFFF"><b><font size="5">
</font></b></font></span><font color="#FFFFFF"><b><font size="5">for(k=0;k<G.arcnum;++k)
<span style="mso-spacerun: yes"> </span><span style="mso-spacerun:
yes"> </span></font></b></font></span><font color="#FFFFFF"><b><font size="5"><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">/*</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">输入各弧并构造十字链表</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">*/</span></font></b></font></p>
<p class="MsoNormal" style="text-indent: 0; margin-left: 0; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes"><font color="#FFFFFF"><b><font size="5">
</font></b></font></span><font color="#FFFFFF"><b><font size="5">{ </font></b></font></span></p>
<p class="MsoNormal" style="text-indent: 0; margin-left: 0; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><font size="5" color="#FFFFFF"><b>
</b></font><font color="#FFFFFF"><b><font size="5">scanf(&v1,&v2); <span style="mso-spacerun: yes"> </span></font></b></font></span><font color="#FFFFFF"><b><font size="5"><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><span style="mso-spacerun:
yes"> </span><span style="mso-spacerun: yes"> </span>/*</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">输入一条弧的始点和终点</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">*/</span></font></b></font></p>
<p class="MsoNormal" style="text-indent: 0; margin-left: 0; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes"><font color="#FFFFFF"><b><font size="5">
</font></b></font></span><font color="#FFFFFF"><b><font size="5">i=LocateVex(*G,v1);
<span style="mso-spacerun: yes"> </span></font></b></font></span></p>
<p class="MsoNormal" style="text-indent: 0; margin-left: 0; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><font size="5" color="#FFFFFF"><b><span style="mso-spacerun: yes">
</span></b></font><font color="#FFFFFF"><b><font size="5">j=LocateVex(*G,v2);<span style="mso-spacerun: yes">
</span></font></b></font></span><font color="#FFFFFF"><b><font size="5"><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">/*</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">确定</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">v1</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">和</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">v2</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">在</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">G</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">中位置</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">*/<o:p>
</o:p>
</span></font></b></font></p>
<p class="MsoNormal" style="text-indent: 0; margin-left: 0; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes"><font color="#FFFFFF"><b><font size="5">
</font></b></font></span><font color="#FFFFFF"><b><font size="5">p=(ArcBox*)
malloc (sizeof(ArcBox));<span style="mso-spacerun:
yes"> </span></font></b></font></span><font color="#FFFFFF"><b><font size="5"><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">/*</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">假定有足够空间</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">*/<o:p>
</o:p>
</span></font></b></font></p>
<p class="MsoNormal" style="text-indent: 0; margin-left: 0; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes"><font color="#FFFFFF"><b><font size="5">
</font></b></font></span><font color="#FFFFFF"><b><font size="5">*p={ i,j,*G->xlist[j].fistin,*G->xlist[i].firstout,NULL}
</font></b></font></span><font color="#FFFFFF"><b><font size="5"><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">/*</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">对弧结点赋值</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">*/</span></font></b></font></p>
<p class="MsoNormal" style="text-indent: 0; margin-left: 0; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun:
yes"><font color="#FFFFFF"><b><font size="5"> </font></b></font></span><font color="#FFFFFF"><b><font size="5"><span style="mso-spacerun: yes"> </span>/*{tailvex,headvex,hlink,tlink,info}*/</font></b></font></span></p>
<p class="MsoNormal" style="text-indent: 0; mso-list: l24 level1 lfo24; tab-stops: list 18.0pt; margin-left: 0; margin-top: 0; margin-bottom: 0"><font size="5" color="#FFFFFF"><b><span style="font-style: normal; font-variant: normal; font-family: Times New Roman; mso-bidi-font-size: 10.0pt" lang="EN-US">
</span><span lang="EN-US">*G->xlist[j].fisrtin=*G->xlist[i].firstout=p;<span style="mso-spacerun: yes">
</span></span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">/*</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">完成在入弧和出弧链头的插入</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">*/<o:p>
</o:p>
</span></b></font></p>
<p class="MsoNormal" style="text-indent: 0; margin-left: 0; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes"><font color="#FFFFFF"><b><font size="5">
</font></b></font></span><font color="#FFFFFF"><b><font size="5">if (IncInfo)
Input( p->info);<span style="mso-spacerun: yes"> </span></font></b></font></span><font color="#FFFFFF"><b><font size="5"><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">/*</span><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">若弧含有相关信息，则输入</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">*/</span></font></b></font></p>
<p class="MsoNormal" style="text-indent: 0; margin-left: 0; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes"><font color="#FFFFFF"><b><font size="5">
</font></b></font></span><font color="#FFFFFF"><b><font size="5">}</font></b></font></span></p>
<p class="MsoNormal" style="text-indent: 0; margin-left: 0; margin-top: 0; margin-bottom: 0"><font size="5" color="#FFFFFF"><b><span lang="EN-US">}</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt">/*CreateDG*/<o:p>
</o:p>
</span></b></font></p>
<p class="MsoNormal" align="center" style="text-align:center;text-indent:21.0pt"><font size="5" color="#FFFFFF"><b><span style="mso-bidi-font-size: 10.0pt; font-family: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">算法</span><span lang="EN-US" style="mso-bidi-font-size: 10.0pt"><span style="mso-spacerun: yes">
</span>8.3<o:p>
</o:p>
</span></b></font></p>
<p class="MsoNormal"><font size="5" color="#FFFFFF"><b><span lang="EN-US"> </span><span style="mso-spacerun: yes" lang="EN-US">
</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">在十字链表中既容易找到以为尾的弧，也容易找到以</span>
<span lang="EN-US">vi</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">为头的弧，因而容易求得顶点的出度和入度（或需要，可在建立十字链表的同时求出）。同时，由算法</span><span lang="EN-US">8.3</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">可知，建立十字链表的时间复杂度和建立邻接表是相同的。在某些有向图的应用中，十字链表是很有用的工具。</span></b></font></p>
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