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An Elo-based rating system for Stack Overflow
                
    Answers and rating deltas for
    Java supports pass-by-value. But can't make out the reason of the below code
| Author | Votes | Δ | 
|---|---|---|
| Pino | 2 | +3.67 | 
| Ahmad | 1 | +1.81 | 
| Max Beikirch | 0 | -2.91 | 
| Vitaly | 0 | -2.57 | 
Last visited: Sep 14, 2014, 5:07:29 AM