Variable in a for loop

In a for loop that I'm writing, I am trying to display two variables set as vectors like:

x = 1:50
y = x 
x = 1:25

However, when I try to display both x and y afterwards, they both display the modified x value. How can I fix this?

Answer 1

[per isakson]

"[...] they both display the modified x value" No they don't. This script

%%
for jj = 1:100
    x = 1:12;
    y = x;
    x = 1:6;
end
% display both x and y afterwards
disp( x )
disp( y )

displays

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

and

>> whos x y
  Name      Size            Bytes  Class     Attributes
  x         1x6                48  double              
  y         1x12               96  double