Question

I need to answer this question in two parts. Create an application containing an array that stores 5 integers. The application should call five methods from Array2 class that in turn (1) display all the integers, (2) display all the integers in reverse order, (3) display the sum of the integers, (4) display all values less than a limiting argument, and (5) display all values that are higher than the calculated average value. Save the file as ArrayTest.java. Array2 needs to be a seperate class, with ArrayTest using an object to call the Array2 class.

Answer 1

Program :

import java.util.Scanner;
public class ArrayTest
{
   public static void main(String[] args) {
   Scanner sc = new Scanner(System.in);
   int i,n;
   int arr[] = new int[5];
   System.out.println("Enter 5 integers:");
   for(i=0;i<5;i++)
   arr[i]=sc.nextInt();
   Array2 obj =new Array2();
   obj.display(arr);
   obj.displayReverse(arr);
   obj.sumOfIntegers(arr);
   System.out.print("Enter a number to limiting:\n");
   n=sc.nextInt();
   obj.displaylimiting(arr,n);
   obj.higherThenavg(arr);
  
   }
}
class Array2
{
void display(int arr[])
{
int i;
System.out.println("All integers:");
for(i=0;i<arr.length;i++)
System.out.print(arr[i]+ " ");
}
  
void displayReverse(int arr[])
{
int i;
System.out.println("\nAll integers reverse order:");
for(i=arr.length-1;i>=0;i--)
System.out.print(arr[i]+ " ");
}

void sumOfIntegers(int arr[])
{
int i,sum=0;
for(i=0;i<arr.length;i++)
sum=sum+arr[i];
System.out.println("\nSum of all integers is: "+sum);
}
  
void displaylimiting(int arr[],int n)
{
int i;
System.out.println("The values are less then "+n);
for(i=0;i<arr.length;i++)
{
if(arr[i]<n)
System.out.print(arr[i]+ " ");
}
}
void higherThenavg(int arr[])
{
int i,sum=0,avg;
System.out.println("\nAll values that are higher than average:");
for(i=0;i<arr.length;i++)
sum=sum+arr[i];
avg=sum/arr.length;
  
for(i=0;i<arr.length;i++)
{
if(arr[i]>avg)
System.out.print(arr[i]+ " ");
}
}
  
}

Screenshot of the output: