More Problems

• Write a program to check if a string is a valid email address using regex.
• Write a program to find the first character that occurs more than once in a string.
• Write a program to implement a basic online restaurant menu.
• Write a program to check if a number is a happy number using a function.
• Write a program to find the sum of the first n prime numbers.
• Write a program to check if a string is a valid URL format.
• Write a program to implement a basic text file reader and writer.
• Write a program to find the maximum sum of any two numbers in an array.