>>Thanks, may be Tariq needs a similar algorithm. I think we also are using similar approach, but not sure where exactly. I know my colleague mentioned FIFO term and I think he intended to assign me this, but don't know what happened with that "project".
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>:) you can have a head-start now when the project comes back to you, best of luck

It's funny, but I just got an assignment to work on FIFO. And my other project (and the checkbox issue) is put on hold.