title: Deal with a variable number of samples associated with identificative values
body: <p>I'm a new member and not an Excel ace!</p>
  
  <p>My problem is that I've (for example, the dataset is much larger) five identification values (id1,id2,id3,id4,id5) in the column A which identify a cast. In column B I've 19 samples for the 5 casts in column A. However, in each cast the sample size vary from 2 to 6. So, I want to obtain 19 values in the way that each cast identification value correspond to its number of samples. In the end I want to have this kind of column A with the identification values (id1,id1,id2,id2,id2,id2,id3,id3,id3,id3,id3,id4,id4,id4,id4,id4,id4,id5,id5) which correspond with the column B with the number of samples (1,2,1,2,3,4,1,2,3,4,5,1,2,3,4,5,6,1,2). So, I want each identification value to correspond to the number of its samples.</p>
  
  <p>Thank you!</p>