how to give range of values to variable

please tell me how to code below statments.

for i from 0 to 255
s[i]:=i

Answer 1

[Stephen23]

Why use slow and ugly loops? This is MATLAB!

s = 0:255;

Note that MATLAB uses one-based indexing, so s(0) is an error.

Answer 2

[Walter Roberson]

for i = 0 : 255
  s(i+1) = i;
end

Or

s = 0 : 255;   %no loop needed

[praveena maddamsetty]

thanks a lot. i am new to matlab if possible please tell how to swap two matrises. deal is not working for swaping s(i) and s(j)

[Walter Roberson]

s([i j]) = s([j i])