Write a function called \"multiply\" that takes in a number and produces an arra

Question

Write a function called "multiply" that takes in a number and produces
an array that represents the multiplication table for that number. A
multiplication table is a NxN array where the first row and column of the
array are the numbers from 0 to N inclusive. The rest of the table is
comprised of the products between that row number and that column number.For example, if the number is 4, the multiplication table would look like
this:
[0 1, 2, 3, 4
1, 1, 2, 3, 4
2,2,4, 6, 8
3, 3, 6, 9, 12
4, 4, 8, 12, 16]

Explanation / Answer

The function is as follows:

 

function multiply( n )
% multiply.m -- produces an
% n x n multiplication table on input n 

A = zeros(n+1,n+1); % initialize the array A

for i = 0:n
    for j = 0:n
% note: we index A by i+1 and j+1
% because we cannot have zero indices
        if i == 0
% make the first row be the numbers 0 to n
            A(i+1,j+1) = j;
        elseif j == 0
% make the first column be the numbers 0 to n
            A(i+1,j+1) = i;
        else
% make the other entries be i*j
            A(i+1,j+1) = i*j;
        end
    end
end

% print the multiplication table
disp(A);

end

Sample run 1:
>> multiply(3)
     0     1     2     3
     1     1     2     3
     2     2     4     6
     3     3     6     9

Sample run 2:
>> multiply(4)
     0     1     2     3     4
     1     1     2     3     4
     2     2     4     6     8
     3     3     6     9    12
     4     4     8    12    16

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