每个节点的生成树数目算法程序

xiangpeng395

2 X" y$ m4 T8 A3 a! P5 j+ V& P最好能够举个简单例子说明一下。实在感谢各位！
A:=A-A(the last row);
num_spn_tree:=det(AA');
for i=1 TO vtsnum DO
' N! I& B# d3 @$ r& t, f. @1 _{
( y4 B# P' G+ v. D* u" Q( }: ]B:=A;
" V* z4 |. j5 u4 |0 ~for j=1 TO edgnum DO
if A[i,j]~0
% o! s( f/ {4 @+ rthen B=B-A(the_j-the column);
B=B-B(the i-th row);
5 w) ^$ e+ G  v2 m' x& LB=B-B(the last row);
nst:=det(BB');
r:=1-nst/num_spn_tree;

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