How to change matrix numbers positions

I have a matrix generated randomly and I want to change the positions of the numbers

i.e:

X=[2 3 4 5;
     7 8 9 1]

to

X=[9 5 1 3;
     5 2 8 2]

(I'm the one who chooses the new positions, not random)

Answer 1

[Georgios Pyrgiotakis]

do you mean that you want to randomly reanrage the array?

[Hugo Matias]

No, i'm the one who chooses the new positions!

Answer 2

[Image Analyst]

Will this work for you?

X = [2 3 4 5;
	7 8 9 1]
[rows, columns] = size(X)
X = X(randperm(numel(X))) % Unfortunately reshapes into a row vector.
X = reshape(X, [rows, columns]) % Put back into 2-D

It rearranges elements into a random order.

[Hugo Matias]

No, i'm the one who chooses the new positions!

[Image Analyst]

What form do you have your new positions in? A matrix? A vector? Two vectors or two matrices with new rows in one, and new columns in the other? Come on, make it EASY for us to help you, not hard.

Answer 3

[Bruno Luong]

X(randperm(numel(X))) = X

[Hugo Matias]

i'm the one who chooses the new positions!

[Bruno Luong]

Even easier:

X(:) = X(TheNewPositionYouChoose)

[Hugo Matias]

How would I do if I wanted to to change the position of the number at (1,2) to (2,3) , for example?

[Bruno Luong]

Put 3 in NewPositionYouChoose(6)