More Problems

• Create a program to calculate the sum of the first n perfect numbers.
• Write a program to find the longest palindromic substring in a string.
• Implement a function to check if a number can be expressed as a sum of two squares.
• Create a program to compute the average of odd numbers in a list.
• Write a program to check if a number is a triangular number.
• Implement a function to find the sum of the digits of a number until it is a single digit.
• Create a program to find the GCD of three numbers using the Euclidean algorithm.
• Write a program to calculate the area of a rectangle given its dimensions.