Assignments

Question 1

Reverse a string using while loop

Answer 1

public class reverse {
    public static void main(String[] arg){
        int num = 54321;
        int result;
        int final1 = 0;

    while(num > 0){
        result = num % 10;
        final1 = final1 * 10 + result;
        num = num / 10;

    }
     System.out.println(final1);

} }

Question 2

Given an array of integers, find the

sum of all the elements in the array.

Answer 2

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

    int[] array = {1,2,3,4,5};
    int sum = 0;  
    for(int i = 0; i < array.length ; i ++ ){
        sum = sum + array[i]; 
    }
    System.out.println("The sum of arrays "+sum);
}

}

Question 3

Arrays.equals()

Answer 3

Compare two array by comparing each elements of the array.

import java.util.Arrays;
public class MyClass {
    public static void main(String[] args) {
        int[] arr1 = {1, 2, 3, 4, 5, 6};
        int[] arr2 = {1, 2, 3, 4, 5, 6};

    if (Arrays.equals(arr1, arr2)) {
        System.out.println("Arrays are equal");
    } else {
        System.out.println("Arrays are not equal");
    }
} }

Question 4

Create a class named Employee with:
variables: emp no and emp name
method: printEmployee which displays
the employee information

Answer 4

class Employee{
    //fields
    int emp_no;
    String emp_name;

    //method
    void printEmployee(int no, String name){
        emp_no = no;
        emp_name = name;
    }
    void display(){
        System.out.println(emp_name+" "+emp_no);
    }
    }

    public class MyClass{
        public static void main(String[] args) {
            Employee e1 = new Employee();
            e1.printEmployee(111,"Aryan");
            e1.display();

    }
}