how to creat cell array

how to creat function which will have an input integer n. if n positive it will create and return a cell array with strings of random characters of increasing lengths from 1 to n

for example

functionname(4)
ans=
    'z' 'zf' 'zfk' 'zfke'

and if it negative it will decreasing

many thanks

Answer 1

[Adam Danz]

Your example only includes lower case so this code does as well.

function randLetters = myfunc(integer)
letters = 'a' : 'z';
rnum = randi(length(letters), 1, abs(integer));
randLetters = cell(1, abs(integer)); 
for i = 1:abs(integer)
    randLetters{i} = letters(rnum(1:i));     
end
if integer < 0 
    randLetters = fliplr(randLetters); 
end

Example

myfunc(8)
ans =
  1×8 cell array
    {'r'}    {'rw'}    {'rwf'}    {'rwfh'}    {'rwfht'}    {'rwfhtb'}    {'rwfhtbt'}    {'rwfhtbta'}
    
myfunc(-4)
ans =
  1×4 cell array
    {'whke'}    {'whk'}    {'wh'}    {'w'}

[Dezdi]

the -4 doesn't work for me it said 0X0 double

do you know what is worng?

[Adam Danz]

Try again. It works for me. If you get the error again,copy and paste the entire error message here.

[Dezdi]

it said

1X4 cell array

{0x0 double} {0x0 double} {0x0 double} {0x0 double}

I write you message as well here did you get it.

[Adam Danz]

I just tried it again and it works with negative and positive inputs. Try copying my version of the code again and replacing whatever code you have. After I published my answer I updated it minutes later with a correction. Maybe you are working with the verion that doesn't have the correction.

If you wrote a personal message I probably didn't get it since I don't take PMs. But I'd be glad to help you here.

Also, you should edit your question and add in the example you removed so your question is complete and understood by others who read it.