Created
February 17, 2014 10:58
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求二进制中1的个数
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| > Written with [StackEdit](https://stackedit.io/). | |
| 右移，与0x1比较 | |
| 除2，比较余数 | |
| 编程之美p121，解法三 | |
| while(v){ | |
| v &= (v-1); | |
| count++; | |
| } | |
| 空间换时间。 | |
| case语句，0x0---0xff | |
| 查表 |
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