I want to input an array of odd/even mixed numbers like [ 1 2 3] and i want the output to be like [ odd even odd] . Added my code, its showing error, Can you tell me where i

A=[1 2 3 4;5 6 7 8;9 10 11 12];

p=size(A,1);

q=size(A,2);

S=zeros(3,4);

for i=1:1:p

for j=1:1:q

if mod(A(i,j),2)==0

S(i,j)='even';

else

S(i,j)='odd';

end

end

end

Answer 1

[Voss]

S cannot be a numeric matrix if it's going to contain character arrays. It can be a cell array though:

A = [1 2 3 4; 5 6 7 8; 9 10 11 12];
[p,q] = size(A);
S = cell(p,q);
for i = 1:p
    for j = 1:q
        if mod(A(i,j),2) == 0
            S{i,j} = 'even';
        else
            S{i,j} = 'odd';   
        end
    end
end

[Voss]

And here's a better way, using logical indexing:

S = cell(size(A));
is_even = mod(A,2) == 0;
S(is_even) = {'even'};
S(~is_even) = {'odd'};

[TM Abir Ahsan]

Got it! Thank you so much man!

Answer 2

[Image Analyst]

You can use a string array instead of a double array like you get from zeros():

A=[1 2 3 4;5 6 7 8;9 10 11 12];
[rows, columns] = size(A)

rows = 3

columns = 4

S=repmat("Unknown", [rows, columns]); % Instantiate string array.
for row = 1 : rows
    for col = 1 : columns
        if mod(A(row,col),2)==0
            S(row,col)="even";
        else
            S(row,col)="odd";
        end
    end
end
S % Show in command window.

S = 3×4 string array
    "odd"    "even"    "odd"    "even"
    "odd"    "even"    "odd"    "even"
    "odd"    "even"    "odd"    "even"

[TM Abir Ahsan]

Thanks man appreciate it!