You have to show effort. Here is some tips:

Hash is perfect in this case. Use the "entry" as the key, and put the page numbers in an array. So we are talking about a hash of arrays here.

Traverse through the file line by line, and use a simple regex to separate 'entry" from the page number.

Peter (Guo) Pei

In reply to Re: Find duplicate elements from an array by PeterPeiGuo
in thread Find duplicate elements from an array by tej

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