Scope.java

package hackerrank;
//import java.io.*;
import java.util.*;

	class Difference {
	  	private int[] elements;
	  	public int maximumDifference;
	      Difference(int[] a)
	      {
	          elements = a;
	      }
	      void computeDifference(){
	    	  Arrays.sort(elements);
	    	  maximumDifference = elements[elements.length-1] - elements[0];  
	      }
		// Add your code here

	} // End of Difference class

	public class Scope {

	    public static void main(String[] args) {
	        Scanner sc = new Scanner(System.in);
	        int n = sc.nextInt();
	        int[] a = new int[n];
	        for (int i = 0; i < n; i++) {
	            a[i] = sc.nextInt();
	        }
	        sc.close();

	        Difference difference = new Difference(a);

	        difference.computeDifference();

	        System.out.print(difference.maximumDifference);
	    }
	}