A = [[1,2,3,4];[5,6,7,8];[2,3,4,5]];
disp(A);
disp('-----------------')
for i =1:2
if A(i,1)>A(i+1,1)
% 交换矩阵两行
A([i i+1],:)=A([i+1,i],:);
end
end
disp(A);
disp('-------------------')
for i =1:3
if A(1,i)<A(1,i+1)
% 交换矩阵两列
A(:,[i i+1])=A(:,[i+1,i]);
end
end
disp(A);