sorting an array in ascending, or descending order, using a switch statement, getting Undefined function or method 'ssort' for input arguments of type 'double'.

Hello all! I'm stuck on this problem. Any insight would be greatly appreciated!

Here's what I'm trying to do. I'm trying to sort an array in ascending order, or descending order, depending on what the user chooses. But the problem is, I can't even get it to sort in ascending order, and I'm not even sure how to even start on getting it to sort in descending order.

I get the error, Undefined function or method 'ssort' for input arguments of type 'double'.

Here's my code:

sortorder = input('Enter the word "up" if you want to sort array in ascending order, \nor enter the word "down" if you want to sort the array in descending order: ', 's');

nvals = input('Enter number of values to sort: ');

switch sortorder

case {'up', 'Up'}

array = zeros(1,nvals);

for ii = 1:nvals

string = ['Enter value ' int2str(ii) ': '];

array(ii) = input(string);

end

%Now sort the data

sorted = ssort(array);

%Display the sorted result

fprintf('\nSorted date:\n');

for ii = 1:nvals

fprintf(' %8.4f\n',sorted(ii));

end

case {'down', 'Down'}

% I STILL NEED TO FIGURE THIS PART OF THE CODE OUT ALSO

end

Oh, and here's an example run of the program

Enter the word "up" if you want to sort array in ascending order, 
or enter the word "down" if you want to sort the array in descending order: up

Enter number of values to sort: 5

Enter value 1: 1

Enter value 2: 2

Enter value 3: 3

Enter value 4: 57

Enter value 5: 7

??? Undefined function or method 'ssort' for input arguments of type 'double'.

Answer 1

[Walter Roberson]

Is ssort() intended to be a routine you define? It is not a MATLAB routine. There is a MATLAB routine named sort() (with a single s), but it is obvious from the wording of the assignment that you are intended to write your own sorting routine.

[Jeffrey]

Oops, lol. Thanks Walter

[Jeffrey]

looks like there was a typo! :)

[Jeffrey]

meant sort, not ssort

[Jeffrey]

Little sleep and finals week definitely contributes to missing the little things

Answer 2

[Jeffrey]

Is there a built in function the sorts the array in descending order? Or will I have to write my own routine for this? Thanks!

Jeff

[Walter Roberson]

sort(A, 'descend')