it's the last index of the array @SORTEDLENDERS. so if it has 5 elements, the last index would be 4, as indizes are from 0..4.
in case the array is empty the last index is -1.
for details (and exceptions) please refer to perldata

In reply to Re: What does $#variable mean? by tinita
in thread What does $#variable mean? by Scarborough

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