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Give a very good method to count the number of ones in a "n"
(e.g. 32) bit number.
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Answer Posted / artyom
// It's still O(n), maybe there are better ways.
int countBit(int num)
{
int count = 0;
while(num)
{
count += static_cast<int>(static_cast<bool>(mask &
0x1));
num >>= 1;
}
return count;
}
| Is This Answer Correct ? | 2 Yes | 0 No |
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