lukaskonarovsky · April 6, 2009 21:33 · Apr 6, 2009
diff --git a/dynamicarray.cpp b/dynamicarray.cpp
@@ -0,0 +1,74 @@
+#include "dynamicarray.h"
+
+using namespace std;
+
+DynamicArray::DynamicArray() {
+  DynamicArray::DynamicArray(5);
+}
+
+DynamicArray::DynamicArray(int initSize) {
+  size = initSize;
+  array = new int[size];
+  for (int i = 0; i < size; i++) {
+    array[i] = 0; // Fill with zeroes
+  }
+}
+
+DynamicArray::DynamicArray(const DynamicArray &original) {
+  size  = original.size;
+  array = new int[size];
+  for (int i = 0; i < size; i++) {
+    array[i] = original.array[i];
+  }
+}
+
+DynamicArray::~DynamicArray() {
+  delete[] array;
+}
+
+
+void DynamicArray::insert(int position, int value) {
+  array[position] = value;
+}
+
+int DynamicArray::get(int position) {
+  return array[position];
+}
+
+int DynamicArray::getSize() {
+  return size;
+}
+
+void DynamicArray::resize(int newSize) {
+  int *temp;
+  temp = new int[newSize];
+  for (int i = 0; i < (newSize); i++) {
+     temp[i] = array[i];
+  }
+  delete[] array;
+  array = temp;
+  size = newSize;
+}
+
+bool DynamicArray::operator==(DynamicArray a)  {
+  if (a.size != size) return false;
+
+  for (int i = 0; i < (a.size); i++) {
+    if (a[i] != array[i]) return false;
+  }
+}
+
+bool DynamicArray::operator!=(DynamicArray a)  {
+  if (a.size != size) return true;
+
+  for (int i = 0; i < (a.size); i++) {
+    if (a[i] != array[i]) return true;
+  }
+}
+
+int &DynamicArray::operator[](int index) {
+  if ((index - 1) > size) {
+    resize(index + 1);
+  }
+  return array[index]; // returned as a reference
+}
diff --git a/dynamicarray.h b/dynamicarray.h
@@ -0,0 +1,24 @@
+
+class DynamicArray {
+
+public:
+  DynamicArray();
+  DynamicArray(int initSize);
+  DynamicArray(const DynamicArray &original);
+  ~DynamicArray();
+
+  void insert(int position, int value); 
+  int get(int position);  
+
+  int getSize();
+  void resize(int newSize);
+
+  int &operator[](int index);
+  bool operator==(DynamicArray);
+  bool operator!=(DynamicArray);
+
+private:
+  int size;  
+  int *array;
+
+};
diff --git a/main.cpp b/main.cpp
@@ -0,0 +1,28 @@
+#include <iostream>
+#include "dynamicarray.h"
+
+using namespace std;
+
+int main(int argc, char **argv) {
+  cout << "Dynamic array..." << endl;
+
+  DynamicArray array = DynamicArray(4);
+  array.insert(1, 7);
+  array.insert(3, 2);
+  array[2] = 4;
+  array[10] = 4;
+  cout << "Pole naplněno." << endl;
+
+  DynamicArray array2 = DynamicArray(array);
+  if (array == array2) {
+    cout << "Kopírovací konstruktor a porovnávání funguje." << endl;
+  }
+
+  array[1] = 9999111;
+  if (array != array2) {
+    cout << "Pole jsou správně považována za nestejná." << endl;
+  }
+
+
+  return 0;
+}
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