Write a program to sort a HashMap by its values in descending order. Explain how you will convert entrySet to List and use Collections.sort with Comparator. Write a program to check whether two ...

1. Write a Code to generate Random numbers. 2. Write code to verify a number is a perfect number or not. 3. Fibonacci series from 1 to 10. 4. Write a program to find a Factorial of a number. 5. Swap ...