Convert a vector to vector sequentially?

I have 2 vector: init = [1 2 3 4], final =[5 6 7 8]. I would like to genertate all the vector like the following:

[1 2 3 4] [5 2 3 4] [5 6 3 4] [5 6 7 4] [5 6 7 8]. Is there anyway to do this fast using some special function available in matlab?

Answer 1

[Walter Roberson]

%assuming init and final are the same size!!
init = [1 2 3 4];
final =[5 6 7 8];
output = repmat(init(:), 1, length(init));
toutput = repmat(final(:), 1, length(init));
mask = triu(true(size(output)),1);
output(mask) = toutput(mask);

And now the outputs are down the columns. If you really want vectors,

num2cell(output,1)

Answer 2

[Stephen23]

>> init  = [1 2 3 4]
>> final = [5 6 7 8]
>> X = triu(ones(5,4));
>> M = init.*X + final.*~X
M =
   1   2   3   4
   5   2   3   4
   5   6   3   4
   5   6   7   4
   5   6   7   8