how to write an array to file

how can i write the result of an array to a txt file, or excel

I want to record the array S values ​​to a file

please help me

S = zeros(1,256);
for j = 1:256
    S(j)= j ;
end
for i = 1 :256
    j = floor(x(i)/gt*2^8);
    if j==0
        j=256;
    end
    t = 2^8 - i;
    if t==0
        t=256
    end
    %[S(j), S(t)] = swap(S(t), S(j));
    j
    t
    a = S(j)
    S(j)= S(t)
    S(t) = a
end
for i = 1:256
    disp(S(i));
end

[Rik]

Have you read the doc for fprintf?

[hang dong]

I want it to export a separate file, not on the command screen

[Stephan]

[hang dong]

Can you give me an example?

Answer 1

[KSSV]

writetable(array2table(S),'test.xlsx')

Or

xlswrite('test.xlsx',S) ;