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Answers and rating deltas for

I have a list of 9 random numbers, how do I find duplicates with RegEx?

Author Votes Δ
vks 2 +1.01
6502 2 +0.90
mpapec 2 +0.00
Borodin -1 -1.90
Last visited: Jan 2, 2016, 9:47:38 PM