我已經看到了關於計數insert type of
輸入中設置位數的許多問題,但它爲什麼有用?爲什麼計數位數很有用?
對於那些尋找位計數算法,請看這裏:
- Counting common bits in a sequence of unsigned longs
- Fastest way to count number of bit transitions in an unsigned int
- How to count the number of set bits in a 32-bit integer?
可以計算奇偶校驗直接與比人口數較少的操作(除非你的CPU有' POPCNT「或類似)。 – 2010-04-13 16:07:44