Rearranging Array Rows into Multiple Blocks while Maintaining the Old Order

How can I rearrange an array from alternating rows to multiple blocks, maintaining the order of the rows?

[madhan ravi]

please illustrate with a input and the desired output as text instead of picture

[Saeid]

The matrix:

[a a a a a;

b b b b b;

c c c c c;

d d d d d;

e e e e e ;

f f f f f ]

should be converted to:

[a a a a a ;

c c c c c;

e e e e e ;

b b b b b;

d d d d d ;

f f f f f];

Answer 1

[Jos (10584)]

You should learn about indexing, one of the most essential aspects of Matlab:

M = randi(4,10,5) ; M(:,1) = 1:size(M,1) % example data
M2 = M([1:2:end 2:2:end], :) % re-ordering the rows

Answer 2

[madhan ravi]

reshape(matrix,[],size(matrix,2))

[Saeid]

Thanks Madhan!