More Problems

• Write a program to check if a string is a valid base64 encoded string.
• Write a program to find the sum of the digits at odd positions in a number.
• Write a program to implement a simple restaurant reservation system.
• Write a program to check if a string is a valid Morse code.
• Write a program to find the maximum product of three numbers in an array.
• Write a program to convert radians to degrees.
• Write a program to implement a basic library checkout system.
• Write a program to check if a number is a perfect number using the proper divisors.