[w2/ex2] Added solution

1 files changed, 112 insertions, 0 deletions

diff --git a/week02/Exercise2.cpp b/week02/Exercise2.cpp
new file mode 100644
index 0000000..c114b81
--- /dev/null
+++ b/week02/Exercise2.cpp
@@ -0,0 +1,112 @@
+#include <iostream>
+
+struct Cell {
+private:
+	int value;
+	char op;
+	Cell* left;
+	Cell* right;
+
+public:
+	Cell() {
+		SetValue(0);
+	}
+	Cell(int value) {
+		SetValue(value);
+	}
+	Cell(char op, Cell* left, Cell* right) {
+		SetFormula(op, left, right);
+	}
+
+	int Evaluate() {
+		switch (op) {
+			case '+': value = left->GetValue() + right->GetValue(); break;
+			case '-': value = left->GetValue() - right->GetValue(); break;
+			case '*': value = left->GetValue() * right->GetValue(); break;
+			case '/': value = left->GetValue() / right->GetValue(); break;
+		}
+		return 0;
+	}
+
+	int GetValue() {
+		return value;
+	}
+	void SetValue(int value) {
+		op = '\0';
+		left = right = nullptr;
+		this->value = value;
+	}
+	void SetFormula(char op, Cell* left, Cell* right) {
+		this-> op = op;
+		this->left = left;
+		this->right = right;
+		Evaluate();
+	}
+};
+
+struct Table {
+private:
+	Cell** cells;
+	int rows;
+	int cols;
+
+	void evaluateAllCells() {
+		for (int i = 0; i < rows; i++) {
+			for (int j = 0; j < cols; j++) {
+				cells[i][j].Evaluate();
+			}
+		}
+	}
+
+public:
+	Table(int rows, int cols) {
+		this->rows = rows;
+		this->cols = cols;
+		cells = new Cell*[rows];
+		for (int i = 0; i < rows; i++) {
+			cells[i] = new Cell[cols];
+		}
+	}
+	~Table() {
+		for (int i = 0; i < rows; i++) {
+			delete[] cells[i];
+		}
+		delete[] cells;
+	}
+
+	Cell* GetCell(int row, int col) {
+		return &cells[row][col];
+	}
+	void SetCell(int row, int col, Cell cell) {
+		cells[row][col] = cell;
+	}
+
+	void UpdateCell(int row, int col, int value) {
+		cells[row][col].SetValue(value);
+		evaluateAllCells();
+	}
+	void UpdateCell(int row, int col, char op, Cell* left, Cell* right) {
+		cells[row][col].SetFormula(op, left, right);
+		evaluateAllCells();
+	}
+
+	void Print() {
+		for (int i = 0; i < rows; i++) {
+			for (int j = 0; j < cols; j++) {
+				std::cout << "|" << cells[i][j].GetValue();
+			}
+			std::cout << "|" << std::endl;
+		}
+	}
+};
+
+int main() {
+	Table mytable(2, 2);
+	mytable.SetCell(0, 0, Cell(5));
+	mytable.SetCell(0, 1, Cell(7));
+	mytable.SetCell(1, 0, Cell('*', mytable.GetCell(0, 0), mytable.GetCell(0, 1)));
+
+	mytable.Print();
+
+	return 0;
+}