在matlab中，dijkstra求最短路径时怎么把其他长度的路径求出来

Question

在matlab中，利用dijkstra算法，如何把最短路径和其他非最短路径的路径同时求出来

function [sp, spcost] = dijkstra_all(matriz_costo, s, d)

n=size(matriz_costo,1);
S(1:n) = 0; %s, vector, set of visited vectors
dist(1:n) = inf; % it stores the shortest distance between the source node and any other node;
prev = zeros(50,n); % Previous node, informs about the best previous node known to reach each network node
count(1:n)=0;

dist(s) = 0;

while sum(S)~=n
candidate=[];
for i=1:n
if S(i)==0
candidate=[candidate dist(i)];
else
candidate=[candidate inf];
end
end
[u_index u]=min(candidate);
S(u)=1;
for i=1:n
if(dist(u)+matriz_costo(u,u)+matriz_costo(u,i))<dist(i)
dist(i)=dist(u)+matriz_costo(u,u)+matriz_costo(u,i);
prev(:,i)=prev(:,i).*0;
prev(1,i)=u;
count(i)=1;

    else
        if ((dist(u)+matriz_costo(u,u)+matriz_costo(u,i))==dist(i))&&(dist(i)~=inf)&&(u~=i)        
            if count(i)<49
                count(i)=count(i)+1;
            end
            prev(count(i),i)=u;           
        end
    end
end

end

sp=[];
stack=[];
num=[];
%建立回溯查找路径的两个栈
stack = [d,zeros(1,9)];
num=[1,zeros(1,9)];
spcost = dist(d);

while stack(1) ~= 0
if stack(1)==s
%记录其中一种路径
sp=[sp;stack];
%pop
stack=[stack(2:10),0];
num=[num(2:10),0];

    continue;
end
tmp=prev(num(1),stack(1));
if tmp==0
    %pop
    stack=[stack(2:10),0];
    num=[num(2:10),0];

    continue;

else
    %push
    num(1)=num(1)+1;
    stack=[tmp,stack(1:9)];
    num=[1,num(1,1:9)];
end

end;

Answer 1

https://blog.csdn.net/young_tao/article/details/81808652