How to create multiple matrices with different sizes without a loop?

Say I have a matrix with M elements. In this case its 3.

A = [1 2 3];

And I want to create M vectors with N random numbers from the interval 0 to each of the element in A.

X = randi([0,A(1)], 1, N)
Y = randi([0,A(2)], 1, N)
Z = randi([0,A(3)], 1, N)

How can I do this without using loops? Is it possible?

Answer 1

[James Tursa]

You will either need to use loops, or hide the loops behind a function call (e.g., arrayfun):

result = arrayfun(@(x)randi([0 x],1,N),A,'uni',false);

Answer 2

[Walter Roberson]

N = 100;
A = [1 2 3];

M = length(A);
XYZcell = num2cell(floor(rand(M, N) .* (A(:)+1)), 2);
[X, Y, Z] = XYZcell{:};

counts = accumarray(Z(:)+1, 1);
bar(0:3, counts)

[Walter Roberson]

Note: this method is very slightly biased against 0 -- but not enough that you would notice.