CareerCup

byte ReverseBits(byte b)
        {
            byte maxByte = 0x80;

            byte reverseChar = 0;
            byte powersOfTwo = 1;
            for (int i = 0; i < 8; i++, maxByte >>= 1, powersOfTwo <<= 1)
            {
                reverseChar += (byte)((b & maxByte) > 0 ? powersOfTwo : 0);
            }

            return reverseChar;
        }

how about:

x = ~a & 0xff;

Python Code

{{
def func(number):
"""Function func take number as argument and return reverse byte string
"""
b_num = bin(number)[2:]
return b_num[::-1]
}}

unsigned char reverseBits(char c){
    unsigned char ch = (unsigned char)c;
    unsigned char csol = 0;
    cout << int(ch) << endl;
    while(ch){
        csol = csol | (ch & 1);
        csol <<= 1;
        ch >>= 1;
    }
    return (csol>>1);
}

char reverseBits(char ch) {
		int out=0;
			int in=(int)ch;
			for (int i = 0; i < 16; i++) {
				if( is_set(in, i) ) { 
				 out=set_bit(out, 15-i);
				}
			}
		return (char)out;
	}

	/** is bit[i] set */
	boolean is_set(int x, int b) {
		return ((x & (1 << b)))==(1<<b) ? true: false; 
	}

	/** set bit[i] to 1 */
	int set_bit(int y, int b) {
		return y | (1 << b); // set the bit on, logical OR
	}