Finding duplicates in a list

[Bill Marriott]

Indeed! But that doesn't give him the output he wants, which is

original index (tab) duplicate index (tab) checksum

"Mark Smith" <mark at maseurope.net> wrote in message 
news:7E16D41D-DFA3-4EE3-9C52-7F0F5DFF7C57 at maseurope.net...
>I got 11 ms on my machine:
>
> function getDupesList pList
>     repeat for each line L in pList
>         if array1[L] is empty then
>             put 0 into array1[L]
>         else
>             put 0 into array2[L]
>         end if
>     end repeat
>     return the keys of array2
> end getDupesList
>
> Best,
>
> Mark