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来自「浙江大学计算机学院数据结构课程的教学课件」· HTM 代码 · 共 56 行
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<pre><b><font face="Arial, Helvetica, sans-serif" size="4" color="#000000">void <font color="#FF0000">dfnlow</font>(int u,int v)
{<i><font size="3" color="#CC0099">/* compute dfn and low while performing a dfs search</font></i>
<i><font size="3" color="#CC0099">beginning at vertex u,v is the parent of u (if any) */</font></i>
node_pointer ptr;
int w;
dfn[u] = low[u] = num++;
for (ptr =graph[u]; ptr; ptr= ptr->link ) {
w = ptr->vertex;
if (dfn [w] < 0) { <i><font size="3" color="#CC0099"> /* w is an unvisited vertex */</font></i>
<font color="#FF0000">dfnlow</font> (w,u);
low[u] = MIN2 ( <font color="#FF0000">low</font>[u], <font color="#FF0000">low</font>[w] );
}
else if ( w != v)
low [u] = MIN2 (<font color="#FF0000"> low</font>[u], <font color="#FF0000">def</font>[w]);
}
}</font></b></pre>
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<pre align="left"><b><font face="Arial, Helvetica, sans-serif" size="4" color="#000000">void<font color="#FF0000"> init </font>(void)
{
int i;
for ( i = 0; i < n; i++ ){
visited [ i] = FALSE;
dfn[ i ] = low[ i ] = -1;
}
num = 0;
}
</font></b></pre>
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