reshaping and transposing question

So my teacher gave us this problem where there's an array

C=[1 7; 2 8; 3 9; 4 10; 5 11; 6 12]

What he wants us to do with this array is use the reshape function with transpose in a single command to output a row vector which equals

[1 4 7 10 2 5 8 11 3 6 9 12].

I understand how the reshape and transpose work together, but i have no idea how to change the order of the numbers with the two functions. Any suggestions?

[Roger Stafford]

Be courageous! Try various successive reshapes and transposes. It takes only a few, namely three, to do the trick.

[John D'Errico]

Think about what order the elements are stored in memory. What do you know about this? Once you understand how MATLAB stores those elements, the reshape and transpose combination should be obvious.

Answer 1

[Image Analyst]

Yep. I got it done with one reshape, and two transposes. Two lines of code and one intermediate variable created, which was the result of the reshape. A brilliant engineer like Savanna should be able to get it done in a few minutes. Keep in mind that MATLAB goes down rows in a column first, before it moves over to the next column. Hint: Look up the colon : operator, and the reshape() function of course.

Answer 2

[Alan Silver]

This one command composed of two reshapings and one tranpose will

do exactly what is shown.

D = reshape(transpose(reshape(C,3,4) ),1,12) ;

Innermost

reshape(C,3,4) gives

[ 1 4 7 10

2 5 8 11

3 6 9 12 ]

then , transposing it gives

[

1 2 3

4 5 6

7 8 9

10 11 12 ]

Then, reshaping again by 1 X 12

gives

[ 1 4 7 10 2 5 8 11 3 6 9 12 ]