Multiply different sized arrays by cycling smaller array

a = 1,2,3
b = 4,5,6,7,8

c=a*b

I want c=a*b in the form:

C(a=1), C(a=2), C(a=3)

where c is three seperate 1x5 arrayss

I am envisaging a for loop cycling through array(a) but can't get it to work

Answer 1

[Manish]

Hi,

I understand that you want to create three separate 1x5 arrays, denoted as C, using the arrays ‘a’ and ‘b’.

Here is the code Implementation:

a = [1, 2, 3];
b = [4, 5, 6, 7, 8];
C = cell(1, length(a));
for i = 1:length(a)
    % Multiply the current element of a with the entire array b
    C{i} = a(i) * b;
end
for i = 1:length(C)
    fprintf('C(a=%d) = ', a(i));
    disp(C{i});
end

C(a=1) = 

     4     5     6     7     8

C(a=2) = 

     8    10    12    14    16

C(a=3) = 

    12    15    18    21    24

Hope this solves!

Answer 2

[Voss]

Perhaps one of these is what you describe:

a = [1,2,3];
b = [4,5,6,7,8];

c = a.'.*b

c = 3×5

4 5 6 7 8 8 10 12 14 16 12 15 18 21 24

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c = a.*b.'

c = 5×3

4 8 12 5 10 15 6 12 18 7 14 21 8 16 24

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c = reshape(c,1,[])

c = 1×15

4 5 6 7 8 8 10 12 14 16 12 15 18 21 24

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