Лазуткин М.К. 1 #4
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| #include <iostream> | ||
| #include <vector> | ||
| #include <stdexcept> | ||
| using namespace std; | ||
| class Matrix { | ||
| private: | ||
| vector<vector<int>>data; | ||
| int num_rows; | ||
| int num_cols; | ||
| public: | ||
| Matrix() : num_rows(0), num_cols(0) { | ||
| } | ||
| Matrix(int rows, int cols) : num_rows(rows), num_cols(cols) { | ||
| if (rows < 0 || cols < 0) { | ||
| throw out_of_range("Out of range"); | ||
| } | ||
| data.resize(rows, vector<int>(cols, 0)); | ||
| } | ||
| Matrix(const Matrix& other) : num_rows(other.num_rows), num_cols(other.num_cols), data(other.data) { | ||
| } | ||
| Matrix(Matrix&& other) noexcept : num_rows(other.num_rows), num_cols(other.num_cols), data(move(other.data)) { | ||
| other.num_rows = 0; | ||
| other.num_cols = 0; | ||
| } | ||
| void Reset(int rows, int cols) { | ||
| if (rows < 0 || cols < 0) { | ||
| throw out_of_range("Out of range"); | ||
| } | ||
| num_rows = rows; | ||
| num_cols = cols; | ||
| data.assign(rows, vector<int>(cols, 0)); | ||
| } | ||
| int At(int row, int col) const { | ||
| if (row < 0 || row >= num_rows || col < 0 || col >= num_cols) { | ||
| throw out_of_range("Index out of bounds"); | ||
| } | ||
| return data[row][col]; | ||
| } | ||
| int& At(int row, int col) { | ||
| if (row < 0 || row >= num_rows || col < 0 || col >= num_cols) { | ||
| throw out_of_range("Index out of bounds"); | ||
| } | ||
| return data[row][col]; | ||
| } | ||
| int GetRows() const { | ||
| return num_rows; | ||
| } | ||
| int GetCols() const { | ||
| return num_cols; | ||
| } | ||
| friend istream& operator>>(istream& is, Matrix& matrix) { | ||
| int rows, cols; | ||
| is >> rows >> cols; | ||
| matrix.Reset(rows, cols); | ||
| for (int i = 0; i < rows; ++i) { | ||
| for (int j = 0; j < cols; ++j) { | ||
| is >> matrix.At(i, j); | ||
| } | ||
| } | ||
| return is; | ||
| } | ||
| friend ostream& operator<<(ostream& os, const Matrix& matrix) { | ||
| os << matrix.num_rows << " " << matrix.num_cols << "\n"; | ||
| for (int i = 0; i < matrix.num_rows; ++i) | ||
