More Problems

• Write a program to check if a number can be expressed as a sum of two prime numbers.
• Write a program to find the sum of all the even Fibonacci numbers up to a limit.
• Write a program to implement a basic social network with friend connections.
• Write a program to check if a string is a valid HTML tag.
• Write a program to find the longest palindrome substring using a dynamic programming approach.
• Write a program to implement a basic online shopping cart with discounts.
• Write a program to check if two binary trees are mirror images of each other.
• Write a program to find the maximum sum of a contiguous subarray using a divide-and-conquer approach.