public class ArrayPracticeInClass
{
	//write a method that accepts an array of integers
	//and a single integer
	//the method should return true if the integer
	//is present in the array.
	//Otherwise, should return false
	//e.g. findNumber(arr, 33);
  public static boolean findNumber(int[] arr, int x)
  {
	for (int i=0; i<arr.length; i++)
	{
		if (  arr[i] == x )
			return true;
	}

	return false;
  } //end findNumber


  //write a method that accepts
  //an array of doubles
  //and returns the average of all the #s in that array
  public static double calcAverage(double[] arr)
  {
    double total=0;
    for (int i=0; i<arr.length; i++)
    {
		total = total + arr[i];
	}
	return (total / arr.length);
  } //end calcAverage


   //write code that will accept an array of integers
   //and an integer
   //sets every element in the array to that integer
   // *** returns an array (reference)
   public static int[] initToNumber(int[] arr, int x)
   {
	   for (int i=0; i<arr.length; i++)
	   {
		   arr[i] = x;
	   }
	   return arr;
   } //end initToNumber


   //write code that will accept an array of integers
   //sets every element in the array to -1
   //and returns that array
   public static int[] initToMinusOne(int[] arr)
   {
	   for (int i=0; i<arr.length; i++)
	   {
		   arr[i] = -1;
	   }
	   return arr;
   } //end initToMinusOne

} //end class