A=[2 4 6 2 1 4 5 6 6 2 1 4 6 4 5 ];
%,我想前3个数一组，往后5个数一组，再往后3个数一组，最后4个数一组
a1=[2 4 6];
a2=[2 1 4 5 6];
a3=[6 2 1];
a4=[4 6 4 5];
j=1;
B=ones(180,4);
for ia=1:length(a1)
for ib=1:length(a2)
for ic=1:length(a3)
for id=1:length(a4)
B(j,:)=[a1(ia),a2(ib),a3(ic),a4(id)];
j=j+1;
end
end
end
end
B是180*4的矩阵
