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2. 如果某一方是2C#的代理人,则回归
原标题:Return if a given int is an exponent of 2 C#
  • 时间:2010-10-04 21:49:05
  •  标签:
  • c#

鉴于 b数据类型采用无固定变量的方法,可确定何为2或2^n........2、4、8、16、32等。 我知道一种使用假肢的方式,如果说的话,但我期望发言一行。

最佳回答

http://graphics.stanford.edu/~seander/bithacks.html Bit:

uint v;         // we want to see if v is a power of 2
bool f;         // the result goes here 

f = (v != 0) && ((v & (v - 1)) == 0);
问题回答

如果数字的标识(基准2)为ger。

C#中一条:

Math.Log(x, 2) % 1 == 0

善待行动更是徒劳无益的,但 lo情听任谁必须维持该守则。

bool powerOfTwo = (unchecked(n & (n-1)) == 0) && (n != 0)
bool answer = ((n & ~(n-1)) == n && n!=0);

这使我投了所有的基本测试。

这似乎很好。





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