Wow... homework never had it so easy.

if the OP understand half of given solutions is valid homework.
L*
There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

In reply to Re^2: How to get this not the usual round robin looping by Discipulus
in thread How to get this not the usual round robin looping by fidda

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