More Problems

• Write a program to check if a number is a perfect number using its divisors.
• Implement a function to find the area of a rectangle given its length and width.
• Create a program to find the number of unique characters in a string.
• Write a program to calculate the product of all odd numbers in a list.
• Implement a function to check if a number is a Fibonacci number.
• Create a program to find the maximum product of any two integers in an array.
• Write a program to determine the average of a list of integers.
• Implement a function to find the longest palindromic substring in a string.