More Problems

• Write a program to calculate the sum of all even numbers in a range.
• Write a program to check if a given string is a valid email address.
• Write a program to find the mode of a set of numbers.
• Write a program to implement a basic note-taking application.
• Write a program to calculate the factorial of a number using memoization.
• Write a program to check if a number is a Harshad number.
• Write a program to implement a simple spell checker.
• Write a program to find the sum of the digits of a number until a single digit is obtained.