Combining arrays of different row length

I have 3 arrays:

A = [1;2;3]

B = [1;2;3;4]

C = [1;2]

I want to combine these to create a new array:

D =

1 1 1

2 2 2

3 3 NaN

NaN 4 NaN

Thank you!

Answer 1

[madhan ravi]

ABC={A,B,C};
MAX=max(cellfun(@numel,ABC));
D=cell2mat(cellfun(@(x)[x;nan(MAX-numel(x),1)],ABC,'un',0))

Answer 2

[Jan]

See: FileExchange: padcat

With a simple loop:

function A = CatWithPadding(varargin)
C   = varargin;
nC  = numel(C);
len = cellfun('prodofsize', C);  % Faster than: @numel
A   = nan(max(len), nC)
for k = 1:nC
    A(1:len(k), k) = C{k}(:);
end
end

Now call this like:

M = CatWithPadding(A, B, C)