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    Answers and rating deltas for
    How to find number of 1's in a binary number in O(1) time?
| Author | Votes | Δ | 
|---|---|---|
| Lynn | 5 | +3.32 | 
| Lazin | 5 | +3.60 | 
| maerics | 4 | +0.64 | 
| Jim Mischel | 0 | -1.30 | 
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