每个节点的生成树数目算法程序

xiangpeng395

最好能够举个简单例子说明一下。实在感谢各位！
) Z1 R- ~( X/ W' a$ Z4 l* dA:=A-A(the last row);
( c" n& |$ J0 R2 X/ i/ Tnum_spn_tree:=det(AA');
for i=1 TO vtsnum DO
{
$ b+ ]7 d' l8 dB:=A;
for j=1 TO edgnum DO
" \9 H& p8 V: D$ b4 K# M) x$ ?if A[i,j]~0
7 i4 l- L, ^5 I  r% U) Othen B=B-A(the_j-the column);
B=B-B(the i-th row);
B=B-B(the last row);
nst:=det(BB');
r:=1-nst/num_spn_tree;
& Y, e! e! O# @0 y: ]2 y
+ o# H* n4 E5 O* W