Program to

import java.util.*;
public class Ch3Q8
{public static void main(String[] args)
  {int x [] = {30, 50, 20, 80, 100, 90, 60, 10, 40, 70};
  int y[];
  y = x;
  System.out.println("Arrays x and y equal is "+Arrays.equals(x, y));
  System.out.println("Array x is:");
  for(int i = 0; i < x.length; i++)
  System.out.print(x[i]+" ");
  System.out.println();
  Arrays.sort(y, 1, 5);
     System.out.println("Arrays x and y equal is "+Arrays.equals(x, y));
     System.out.println("Array y is:");
  for(int i = 0; i < y.length; i++)
  System.out.print(y[i]+" ");
  System.out.println();
  Arrays.sort(x);
  System.out.println("Array x is:");
  for(int i = 0; i < x.length; i++)
  System.out.print(x[i]+" ");
  System.out.println();
  int z[] = new int[10];
  Arrays.fill(z, 10);
  for(int i = 0; i < z.length; i++)
     {z[i] *= i; z[i]+=10;}
  System.out.println("Array z is:");
  for(int i = 0; i < z.length; i++)
  System.out.print(z[i]+" ");
  System.out.println();
  for(int no = 7; no <= 700; no*=10)
     {int pos = Arrays.binarySearch(x, no);
      System.out.println("position of "+no+" in x array is "+pos);
     }
  System.out.println("Arrays z and y equal is "+Arrays.equals(z, y));
  int z1[] = new int[5];
  System.arraycopy(z, 3, z1, 0, 5);
     System.out.println("Array z1 is:");
  for(int i = 0; i < z1.length; i++)
  System.out.print(z1[i]+" ");
  System.out.println();
    }
}