More Problems

• Write a program to check if a number is a perfect number using the sum of its divisors.
• Write a program to find the longest repeating sequence in a string.
• Write a program to check if a number is a prime number using a function.
• Write a program to find the maximum product of any three numbers in an array.
• Write a program to implement a basic user registration system.
• Write a program to calculate the area of an ellipse given the semi-major and semi-minor axes.
• Write a program to check if a string is a valid IPv6 address.
• Write a program to find the smallest prime number in a given range.