Question $1$ Problem: Given an array of integers, find the second largest number in the array and print it$.$

Question $2$Problem: Given a string, reverse it without using built$-$in functions and print the reversed string.

Question $3$Problem: Create a class Circle with attributes radius and color, and methods to calculate area and circumference. Write a program to create instances of Circle, calculate their area and circumference, and print the results.

Question $4$Problem: Write a program that asks the user for a number and computes the square root of that number. Handle exceptions if the user enters a negative number.

Question $5$Problem: Given an ArrayList of integers, write a program to remove all duplicate elements and print the modified ArrayList.

Question $6$Problem: Create a class Employee with attributes id $($int$)$ and name $($String$).$ Write a program to create an ArrayList of Employee objects, add some objects to the list, and then sort the list based on employee IDs in ascending order.