假设你有一个比特数组，怎么样: 1. 从MSB开始，将比特一个一个地推入堆栈。 2. 从这个堆栈弹出位到另一个数组(如果你想节省空间，也可以是同一个数组)，将第一个弹出位放入MSB，然后从那里继续到较低的有效位。

Stack stack = new Stack();
Bit[] bits = new Bit[] { 0, 0, 1, 0, 0, 0, 0, 0 };

for (int i = 0; i < bits.Length; i++) 
{
    stack.push(bits[i]);
}

for (int i = 0; i < bits.Length; i++)
{
    bits[i] = stack.pop();
}

通用的

C代码。以1字节输入数据num为例。

    unsigned char num = 0xaa;   // 1010 1010 (aa) -> 0101 0101 (55)
    int s = sizeof(num) * 8;    // get number of bits
    int i, x, y, p;
    int var = 0;                // make var data type to be equal or larger than num

    for (i = 0; i < (s / 2); i++) {
        // extract bit on the left, from MSB
        p = s - i - 1;
        x = num & (1 << p);
        x = x >> p;
        printf("x: %d\n", x);

        // extract bit on the right, from LSB
        y = num & (1 << i);
        y = y >> i;
        printf("y: %d\n", y);

        var = var | (x << i);       // apply x
        var = var | (y << p);       // apply y
    }

    printf("new: 0x%x\n", new);

我认为这是最简单的逆转比特的方法之一。 如果这个逻辑有什么缺陷，请让我知道。 基本上在这个逻辑中，我们检查位置的位的值。 如果值为1，则在反转位置上设置位。

void bit_reverse(ui32 *data)
{
  ui32 temp = 0;    
  ui32 i, bit_len;    
  {    
   for(i = 0, bit_len = 31; i <= bit_len; i++)   
   {    
    temp |= (*data & 1 << i)? (1 << bit_len-i) : 0;    
   }    
   *data = temp;    
  }    
  return;    
}    

unsigned char ReverseBits(unsigned char data)
{
    unsigned char k = 0, rev = 0;

    unsigned char n = data;

    while(n)

    {
        k = n & (~(n - 1));
        n &= (n - 1);
        rev |= (128 / k);
    }
    return rev;
}

假设你有一个比特数组，怎么样: 1. 从MSB开始，将比特一个一个地推入堆栈。 2. 从这个堆栈弹出位到另一个数组(如果你想节省空间，也可以是同一个数组)，将第一个弹出位放入MSB，然后从那里继续到较低的有效位。

Stack stack = new Stack();
Bit[] bits = new Bit[] { 0, 0, 1, 0, 0, 0, 0, 0 };

for (int i = 0; i < bits.Length; i++) 
{
    stack.push(bits[i]);
}

for (int i = 0; i < bits.Length; i++)
{
    bits[i] = stack.pop();
}

// Purpose: to reverse bits in an unsigned short integer 
// Input: an unsigned short integer whose bits are to be reversed
// Output: an unsigned short integer with the reversed bits of the input one
unsigned short ReverseBits( unsigned short a )
{
     // declare and initialize number of bits in the unsigned short integer
     const char num_bits = sizeof(a) * CHAR_BIT;

     // declare and initialize bitset representation of integer a
     bitset<num_bits> bitset_a(a);          

     // declare and initialize bitset representation of integer b (0000000000000000)
     bitset<num_bits> bitset_b(0);                  

     // declare and initialize bitset representation of mask (0000000000000001)
     bitset<num_bits> mask(1);          

     for ( char i = 0; i < num_bits; ++i )
     {
          bitset_b = (bitset_b << 1) | bitset_a & mask;
          bitset_a >>= 1;
     }

     return (unsigned short) bitset_b.to_ulong();
}

void PrintBits( unsigned short a )
{
     // declare and initialize bitset representation of a
     bitset<sizeof(a) * CHAR_BIT> bitset(a);

     // print out bits
     cout << bitset << endl;
}


// Testing the functionality of the code

int main ()
{
     unsigned short a = 17, b;

     cout << "Original: "; 
     PrintBits(a);

     b = ReverseBits( a );

     cout << "Reversed: ";
     PrintBits(b);
}

// Output:
Original: 0000000000010001
Reversed: 1000100000000000