vectors in c++
Sat Mar 26, 2011 2:20 am
1.A bit vector is a vector with binary elements, that is, each element is either a 0 or a 1. Small bit vectors are conveniently represented by unsigned integers. For example, an unsigned char can represent a bit vector of 8 elements. Larger bit vectors can be defined as arrays of such smaller bit vectors. Complete the implementation of the Bitvec class, as defined below. It should allow bit vectors of any size to be created and manipulated using the associated operators.
- Code:
enum Bool {false, true};
typedef unsigned char uchar;
class BitVec {
public:
BitVec (const short dim);
BitVec (const char* bits);
BitVec (const BitVec&);
~BitVec (void)
{ delete vec;
}
BitVec& operator = (const BitVec&);
BitVec& operator &= (const BitVec&);
BitVec& operator |= (const BitVec&);
BitVec& operator ^= (const BitVec&);
BitVec& operator <<= (const short);
BitVec& operator >>= (const short);
int operator [] (const short idx);
void Set (const short idx);
void Reset (const short idx);
BitVec operator ~ (void);
BitVec operator & (const BitVec&);
BitVec operator | (const BitVec&);
BitVec operator ^ (const BitVec&);
BitVec operator << (const short n);
BitVec operator >> (const short n);
Bool operator == (const BitVec&);
Bool operator != (const BitVec&);
friend ostream& operator << (ostream&, BitVec&);
private: uchar *vec; // vector of 8*bytes bits
short bytes; // bytes in the vector
};
Re: vectors in c++
Sat Mar 26, 2011 10:14 am
code not clear :S 
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