Dear all,
I have got a question for generating repeats of a vector's elements.
Please don't hesitate to email me back and say that it is very easy
although I can't find a method to solve it.
If I have a n-vector b, whose elements are b[1], b[2], ..., b[n], how
can I generate such a vector
b[1], b[1], b[2], b[1], b[2], b[3], b[1], b[2], b[3], b[4],
......, b[1], b[2], ..., b[n]
which contains n(n+1)/2 elements.
Thanks very much.
Regards
Chaofeng Kou
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