#ifndef SPARSE_H_
#define SPARSE_H_
#include <iostream>
#include <cmath>
#include <vector>
using std::vector;

typedef double T;
//template <class T>
class rowVecItem{
	int col;
	T val;
};
//template <class T>
class rowVec{
	int row;
	vector <rowVecItem> allRowItems;
public:
	vector <rowVecItem>::iterator begin();
	vector <rowVecItem>::iterator end();
	rowVecItem& at(int index);
	const rowVecItem& at(int index) const;
};

vector <rowVecItem>::iterator rowVec::begin(){
	return allRowItems.begin();
}
vector <rowVecItem>::iterator rowVec::end(){
	return allRowItems.end();
}
rowVecItem& rowVec::at(int index){
	return allRowItems.at(index);
}

const rowVecItem& rowVec::at(int index) const{
	return allRowItems.at(index);
}

//template <class T>
class sparseMatrix{
	int maxRows;
	int maxCols;
	vector <rowVec> sparseMatVec;
public:
	sparseMatrix(int rows, int cols);
	sparseMatrix(const sparseMatrix& sm);
	~sparseMatrix();
	int getRowCount() const;
	int getColCount() const;
	int getNotEmptyCells();
	void iterateNonZeroRowVals();
	T& operator()(int row, int col);
	T& operator=(const T&);
	sparseMatrix& operator+=(const sparseMatrix& sm);
	vector <rowVec>::iterator begin();
	vector <rowVec>::iterator end();
	rowVec& at(int index);
	const rowVec& at(int index) const;
};

sparseMatrix operator+(const sparseMatrix& sm1, const sparseMatrix& sm2);
sparseMatrix operator*(const sparseMatrix& sm1, const sparseMatrix& sm2);

vector <rowVec>::iterator sparseMatrix::begin(){
	return sparseMatVec.begin();
}

vector <rowVec>::iterator sparseMatrix::end(){
	return sparseMatVec.end();
}

rowVec& sparseMatrix::at(int index){
	return sparseMatVec.at(index);
}

const rowVec& sparseMatrix::at(int index) const{
	return sparseMatVec.at(index);
}

//NOT COMPLETED
sparseMatrix::sparseMatrix(const sparseMatrix& sm){
		maxRows = sm.getRowCount();
		maxCols = sm.getColCount();
}

int sparseMatrix::getRowCount() const{
		return maxRows;
}

int sparseMatrix::getColCount() const{
		return maxCols;
}

/*
template <class T>
class rowVecItem{
	int col;
	T val;
};
template <class T>
class rowVec{
	//typedef ___ iterator; - public/private
	int row;
	vector <rowVecItem<T> > allRowItems;
};
template <class T>
class sparseMatrix{
	// iterator - public/private
	vector <rowVec<T> > sparseMatVec;
};
*/
#endif /* SPARSE_H_ */