// File: ArraysMethodsDemo.java

// Arrays class methods fill(), sort(), binarySearch(), and equals(),
// and System method arraycopy()
import java.util.Arrays;

public class ArraysMethodsDemo
{

   // print an array of Strings	
   static void printArray(String[] list)
   {
      for (int i = 0; i < list.length; i++)
      {
         System.out.print(list[i] + " ");
      }

      System.out.println("\n");
   }

   // overloaded method to print array of ints
   static void printArray(int[] list)
   {
      for (int i = 0; i < list.length; i++)
      {
         System.out.print(list[i] + " ");
      }

      System.out.println("\n");
   }

   // search for String "target" in String array "list"
   static void search(String[] list, String target)
   {
      int position = Arrays.binarySearch(list, target);

      if (position >= 0)
      {
         System.out.println(target + " found in element #" + position);
      } 
      else
      {
         System.out.println(target + " not found! position = " + position);
      }
      System.out.println();
   }

   public static void main(String args[])
   {
      // initialize 2 arrays using special syntax

      int[] numbers =
      {
         2, 5, 8, 10, 41
      };

      String[] fruits =
      {
         "Strawberries", "Bananas", "Cherries",
         "Apricots", "Peaches"
      };

      int[] copy = Arrays.copyOf(numbers, numbers.length);  // will become a copy of numbers

      System.out.print("The array \"numbers\":  ");
      printArray(numbers);
      System.out.print("The array \"copy\":  ");
      printArray(copy);

      if (Arrays.equals(numbers, copy))		// are arrays equal?
      {
         System.out.println("Arrays numbers and copy are equal!");
      } 
      else
      {
         System.out.println("Arrays numbers and copy are NOT equal!");
      }

      
      System.arraycopy(copy, copy.length - 2, numbers, 0, 2);

      System.out.print("\n\"numbers\" after copying last 2 elements "
              + "of \"copy\" to the beginning:\n");
      printArray(numbers);

      if (Arrays.equals(numbers, copy))		// are arrays equal?
      {
         System.out.println("Arrays \"numbers\" and \"copy\" are equal!");
      } 
      else
      {
         System.out.println("Arrays \"numbers\" and \"copy\" are NOT equal!");
      }

      System.out.print("\nThe array \"fruits\":  ");
      printArray(fruits);

      Arrays.sort(fruits);   				// sort the fruits

      System.out.print("After sorting:  ");
      printArray(fruits);

      search(fruits, "Cherries");
      search(fruits, "Apricots");
      search(fruits, "Cantelope");
      search(fruits, "grapes");		// greater than last element of array
      search(fruits, "Apples");		// less than first element of array
   }
}

/*  program output:

The array "numbers":  2 5 8 10 41

The array "copy":  2 5 8 10 41

Arrays numbers and copy are equal!

"numbers" after copying last 2 elements of "copy" to the beginning:
10 41 8 10 41

Arrays "numbers" and "copy" are NOT equal!

The array "fruits":  Strawberries Bananas Cherries Apricots Peaches

After sorting:  Apricots Bananas Cherries Peaches Strawberries

Cherries found in element #2

Apricots found in element #0

Cantelope not found! position = -3

grapes not found! position = -6

Apples not found! position = -1

 */