How to vectorize this code?

[Brian Kaczynski]

Hello Octavians!

I have a long vector DIV (containing about 150,000 elements) which contains integers only from 32 to 64, inclusive.  I want to create a longer vector containing 1's repeated DIV(1) times, 2's repeated DIV(2) times, 3's repeated DIV(3) times, etc.  This is how I'm doing it now:

  ind = [];

  for j = 1:length(DIV)

  ind = [ind ; j*ones(DIV(j),1)];

  end

I know there are some experts at vectorizing for-loop code like this.  Who can give this a shot?

Thanks!

-Brian