package lab4;

public class ArrayInstance 
{	
	//member variable
	private double[] vector;
	
	//one parameter constructor
	ArrayInstance(double vector[]) 
	{		
		int length = vector.length;
		this.vector = new double[length];
				
		for (int i = 0; i < length; i++)
		{
			/*Step 1: assign value to instance variable's correct 
			 * array position using the parameter passed.
			 * How do I access the instance variable vector ??
			 */ 
			
		}
	}

	//copy constructor
	ArrayInstance(ArrayInstance copyFrom)
	{
		int length = copyFrom.vector.length;
		this.vector = new double[length];
				
		for (int i = 0; i < length; i++)
		{
			/*Step 2: assign value to instance variable's correct 
			 * array position using the parameter passed.
			 */
			
		}
	}
	
	//member function
	/**
	* Name: dotProduct
	* PreCondition:  secondVector is not null
	*                arrays are the same size
	* PostCondition: Returns the calculated dot product
	* @params secondVector - contains vector to perform dot product with
	*/
	public double dotProduct(ArrayInstance secondVector) {
		double value = 0;
		int length = secondVector.vector.length;
		
		for (int i = 0; i < length; i++)
		{
			value += this.vector[i] * secondVector.vector[i];
		}
	
		return value;
	}
	
	/**
	* Name: getArray
	* PreCondition:  none
	* PostCondition: Returns copy of the array
	*/
	public double[] getArray() {
		
		/* Step 3: Make a deep copy of the vector instance variable
		 * First find the length of the array, allocate memory for
		 * the new array. Then perform the actual copy of elements.
		 * The logic is similar to the one used in the constructor.
		 */
		
	}	
}