vector.h

斯坦福Energy211/CME211课《c++编程——地球科学科学家和工程师》的课件

// ENERGY211/CME211
//
// vector.h - header file for Project 3
//

#ifndef CLASS_VECTOR	// Make sure this isn't included
#define CLASS_VECTOR	// more than once

#include "matrix.h"

// This derived class is used to implement a column vector.
// We could simply use a Matrix object with one column, but
// this is more convenient.  Again, DO NOT ADD, MODIFY OR
// DELETE PUBLIC DECLARATIONS!
class ColVector : public Matrix {
public:
	// To construct a vector from an array of doubles
	ColVector( int rows = 0, double *data = NULL );
	// Copy constructor
	ColVector( const ColVector& v );
	// Conversion constructor from Matrix object with
	// one column
	ColVector( const Matrix& A );
	// This destructor will automatically call the
	// destructor for the underlying Matrix object first
	~ColVector();

	inline int length() const { return m_rows; }
	
	static double norm( const ColVector& v, int p = 2 );
	
	// If we add two vectors, or perform any other similar
	// operation, we are using the operator of the Matrix
	// class, the result is a Matrix.  In order to assign
	// the result to a ColVector object, we need this
	// overload of the assignment operator
	ColVector& operator=( const Matrix& v );
	
	// The [] operator for a Matrix object returns a pointer
	// to the ith row, which contains the ith element, but 
	// for a column vector, we need the ith element itself.
	// This redefines the [] operator accordingly.
	double& operator[]( int i ) const;
	
	ColVector operator[]( Range r ) const;
} ;

#endif