More Problems

• 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.
• Write a program to find the largest number in an array using pointers.
• Write a program to implement a basic student management system.
• Write a program to check if a string is a valid URL.
• Write a program to convert binary to decimal.