function pathlong=pathlong(path,TSPMatrix)
%計算路徑長度
[row,col]=size(path);
for i=1:row
    pathlong(i)=0;
    for j=1:(col-1)
        pathlong(i)=pathlong(i)+TSPMatrix(path(i,j),path(i,j+1));
    end
    pathlong(i)=pathlong(i)+TSPMatrix(path(i,j+1),path(i,1));
end