Value swapping

Hello,

I have a matrix

x =

     7     8
     7    13
     1     7
     3     7

i want to search all 7 and shift to the first column and the corresponding value to the other coloumn, like

x =

     7     8
     7    13
     7     1
     7     3

Answer 1

[Grzegorz Knor]

x(x(:,2)==7,:) = fliplr(x(x(:,2)==7,:))

[developer]

Thanks :)

[Grzegorz Knor]

similar solution:

x(x(:,2)==7,end:-1:1) = x(x(:,2)==7,:)

Answer 2

[Paulo Silva]

x = [ 7     8
     7    13
     1     7
     3     7]
 f2=find(x(:,2)==7)+size(x,1);
 f1=find(x(:,1)~=7);
 tmp1=x(f1);
 x(f1)=x(f2);
 x(f2)=tmp1;
 x

Grzegorz Knor solution seems to be better, I didn't test it.

[developer]

Thanks :)