Vector added

random-access-containers/vector.hpp

@@ -0,0 +1,38 @@
+#include <cstddef>
+#include <cstdlib>
+#include <stdexcept>
+
+template<class T>
+class Vector
+{
+protected:
+	T * data;
+	std::size_t size;
+
+public:
+	void Resize(std::size_t const newSize)
+	{
+		void * result = std::realloc(data, newSize);
+		if(result == nullptr)
+		{
+			throw std::runtime_error("Cannot allocate the requested size of memory.");
+		}
+
+		size = newSize;
+		data = reinterpret_cast<T *>(result);
+	}
+
+	T & operator[](std::size_t const index)
+	{
+		if(index >= size)
+		{
+			throw std::out_of_range("Index is greater or equal to size.");
+		}
+		return data[index];
+	}
+
+	std::size_t GetSize() const
+	{
+		return size;
+	}
+};