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RE: RE: Answer: How do I find the Nth occurrence of a pattern?

by eak (Monk)
on Aug 06, 2000 at 19:20 UTC ( [id://26433]=note: print w/replies, xml ) Need Help??


in reply to RE: Answer: How do I find the Nth occurrence of a pattern?
in thread How do I find the Nth occurrence of a pattern?

Now using grep...speeed!!
#!/usr/bin/perl -w my @string = (34, 56, 78, 90, 98, 76, 54, 32, 10, 12, 13, 16, 19, 20, +10, 56); sub nth_iter{ my ($item, $n, $list) = @_; ( grep $list->[$_] == $item, 0..$#$list )[--$n] or -1; } print nth_iter(10, 3, \@string);

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