how to append "specific columns" in an array

hello ,

i tried so many combinations of codes using reshape and permute function but i couldn't get the desired output

suppose my array looks like

0   0
0   0
1   1
0  1

there are 2 columns and i want to take 1st column and copy it in 2nd and 3rd column , but i want to append it , i dont want to overwrite existing columns

so as a result i want 6 columns

0  0  0  0  0  0
0  0  0  0  0  0
1  1  1  1  1  1
0  0  0  1  1  1

i tried 2 clear my problem .... Can AnyOne Help With This Please??

I am Looking for Generalized code that can work for every array

[Mischa Kim]

Is the very first column supposed to be [0;0;1;0] rather than [0;0;0;0]?

[pooja]

sorry i edited the mistake ...does it look ok now ?

Answer 1

[Mischa Kim]

Pooja, use

 B = reshape(repmat(A,3,1),length(A(:,1)),[])

assuming the first column is (supposed to be, typo?) equal to the second one in the 12-column matrix.

[pooja]

Oh thank you so much Mr. Mischa Kim

i am a beginner in maatlab and these 2 (reshape and permute) are still a mystery 2 me :P

[pooja]

Can i get generalized code ?

this works with only this specific array

sorry i didn't specified it !!

[Mischa Kim]

See above. What else do you need to generalize? The number of repeated columns?

[pooja]

oh now it works all fine....thank you so much Mr.Mischa Kim :)

Answer 2

[Chandrasekhar]

A = [0 0 0 0;0 0 1 0;1 1 1 1;0 1 0 1];
appending 1st column of A at the end|
A = [A A(:,1)];

[pooja]

Though its not i was looking for ,Thank you for replying :)