otherwise 1,2,1,2,3,2,3,4,3... will be seen as a run.
well, they are adjacent, after all. The OP would have to specify, whether e.g 2,3,1 should be treated as group, or not.
In other words, whether a preceding sort step could distort the desired outcome.

In reply to Re^4: Adjacent numbers by soonix
in thread Adjacent numbers by melissa_randel

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