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Answers and rating deltas for

How can I prevent the same string from being added into my stored array

Author Votes Δ
Duncan C 2 +0.89
Muneeba 0 -0.85
CandleCoder 0 -0.79
DHEERAJ 0 -0.39
sourav 0 -0.75
Luca Angeletti 0 -0.54
Last visited: Mar 16, 2016, 9:29:05 AM