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#ifndef ARRAY2D_H_
#define ARRAY2D_H_
#include <iostream>
#include <algorithm>
#include <cassert>
#include <vector>
#include <string>
template<typename T>
class Array2D {
public:
typedef typename std::vector<T>::reference reference;
typedef typename std::vector<T>::const_reference const_reference;
typedef typename std::vector<T>::iterator iterator;
typedef typename std::vector<T>::const_iterator const_iterator;
Array2D() : width_(0), height_(0) {}
Array2D(int w, int h, const T& d = T()) :
width_(w), height_(h), data_(w*h, d) {}
Array2D(const Array2D& rhs) :
width_(rhs.width_), height_(rhs.height_), data_(rhs.data_) {}
bool empty() const { return data_.empty(); }
void resize(int w, int h, const T& d = T()) {
data_.resize(w * h, d);
width_ = w;
height_ = h;
}
const Array2D& operator=(const Array2D& rhs) {
data_ = rhs.data_;
width_ = rhs.width_;
height_ = rhs.height_;
return *this;
}
void fill(const T& v) { data_.assign(data_.size(), v); }
int width() const { return width_; }
int height() const { return height_; }
reference operator()(int i, int j) {
return data_[offset(i, j)];
}
void clear() { data_.clear(); width_=0; height_=0; }
const_reference operator()(int i, int j) const {
return data_[offset(i, j)];
}
iterator begin_col(int j) {
return data_.begin() + offset(0,j);
}
const_iterator begin_col(int j) const {
return data_.begin() + offset(0,j);
}
iterator end_col(int j) {
return data_.begin() + offset(0,j) + width_;
}
const_iterator end_col(int j) const {
return data_.begin() + offset(0,j) + width_;
}
iterator end() { return data_.end(); }
const_iterator end() const { return data_.end(); }
const Array2D<T>& operator*=(const T& x) {
std::transform(data_.begin(), data_.end(), data_.begin(),
std::bind2nd(std::multiplies<T>(), x));
}
const Array2D<T>& operator/=(const T& x) {
std::transform(data_.begin(), data_.end(), data_.begin(),
std::bind2nd(std::divides<T>(), x));
}
const Array2D<T>& operator+=(const Array2D<T>& m) {
std::transform(m.data_.begin(), m.data_.end(), data_.begin(), data_.begin(), std::plus<T>());
}
const Array2D<T>& operator-=(const Array2D<T>& m) {
std::transform(m.data_.begin(), m.data_.end(), data_.begin(), data_.begin(), std::minus<T>());
}
private:
inline int offset(int i, int j) const {
assert(i<width_);
assert(j<height_);
return i + j * width_;
}
int width_;
int height_;
std::vector<T> data_;
};
template <typename T>
Array2D<T> operator*(const Array2D<T>& l, const T& scalar) {
Array2D<T> res(l);
res *= scalar;
return res;
}
template <typename T>
Array2D<T> operator*(const T& scalar, const Array2D<T>& l) {
Array2D<T> res(l);
res *= scalar;
return res;
}
template <typename T>
Array2D<T> operator/(const Array2D<T>& l, const T& scalar) {
Array2D<T> res(l);
res /= scalar;
return res;
}
template <typename T>
Array2D<T> operator+(const Array2D<T>& l, const Array2D<T>& r) {
Array2D<T> res(l);
res += r;
return res;
}
template <typename T>
Array2D<T> operator-(const Array2D<T>& l, const Array2D<T>& r) {
Array2D<T> res(l);
res -= r;
return res;
}
template <typename T>
inline std::ostream& operator<<(std::ostream& os, const Array2D<T>& m) {
for (int i=0; i<m.width(); ++i) {
for (int j=0; j<m.height(); ++j)
os << '\t' << m(i,j);
os << '\n';
}
return os;
}
inline std::ostream& operator<<(std::ostream& os, const Array2D<bool>& m) {
os << ' ';
for (int j=0; j<m.height(); ++j)
os << (j%10);
os << "\n";
for (int i=0; i<m.width(); ++i) {
os << (i%10);
for (int j=0; j<m.height(); ++j)
os << (m(i,j) ? '*' : '.');
os << (i%10) << "\n";
}
os << ' ';
for (int j=0; j<m.height(); ++j)
os << (j%10);
os << "\n";
return os;
}
inline std::ostream& operator<<(std::ostream& os, const Array2D<std::vector<bool> >& m) {
os << ' ';
for (int j=0; j<m.height(); ++j)
os << (j%10) << "\t";
os << "\n";
for (int i=0; i<m.width(); ++i) {
os << (i%10);
for (int j=0; j<m.height(); ++j) {
const std::vector<bool>& ar = m(i,j);
for (unsigned k=0; k<ar.size(); ++k)
os << (ar[k] ? '*' : '.');
}
os << "\t";
os << (i%10) << "\n";
}
os << ' ';
for (int j=0; j<m.height(); ++j)
os << (j%10) << "\t";
os << "\n";
return os;
}
#endif
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