Question

6. Write a Java program to rotate an array (length 3) of integers in left direction
7. Write a Java program to store a collection of integers, sort them in ascending order and print the sorted integers.

Answer 1

Answer 6 ;

JAVA PROGRAM TO ROTATE AN ARRAY(LENGTH 3) OF INTEGERS IN LEFT DIRECTION.

import java.util.Scanner;

public class Main
{
   public static void main(String[] args) {

      Scanner sc=new Scanner(System.in);
      System.out.println("Enter array elements (length 3): ");

      int arr[] =new int[3] ;

      for(int i=0;i<3;i++)
      {
         int n=sc.nextInt();
         arr[i]=n;
      }

      //rotate array of integers in left direction.
      int temp=arr[0];
      arr[0]=arr[1];
      arr[1]=arr[2];
      arr[2]=temp;

      //printing the rotated elements of an array.
      System.out.println("After rotation of an array in left direction: ");
      for(int i=0;i<3;i++)
         System.out.print(arr[i]+" ");

   }
}


EXAMPLE :

Answer 7 ;

JAVA PROGRAM TO STORE A COLLECTION OF INTEGERS , SORT THEM IN ASCENDING ORDER AND PRINT THE SORTED INTEGERS.

import java.util.Scanner;

public class Main {
   public static void main(String[] args) {

      Scanner sc = new Scanner(System.in);
      System.out.println("Enter size of the collection of the integers:  ");
        int n = sc.nextInt();

      System.out.println("Enter the elements: ");
        int arr[]=new int[n];

        //storing a collection of integers.
        for(int i=0;i<n;i++)
        {
           int element=sc.nextInt();
           arr[i]=element;
        }

        //sorting them in ascending order.
      int len = arr.length;
      for (int i = 0; i < len-1; i++) {
         for (int j = 0; j < len - i - 1; j++) {
            if (arr[j] > arr[j + 1]) {
               // swap temp and arr[i]
               int temp = arr[j];
               arr[j] = arr[j + 1];
               arr[j + 1] = temp;
            }
         }
      }

      //printing the sorted integers.
      System.out.println("Sorted integers in ascending order: ");
      for(int i=0;i<n;i++)
         System.out.print(arr[i]+" ");

   }
}

EXAMPLE :