More Problems

• Write a program to check if a string contains balanced parentheses of different types.
• Write a program to find the intersection of two sets using linked lists.
• Write a program to implement a basic text file encryption and decryption utility.
• Write a program to find the maximum sum of a non-contiguous subarray using dynamic programming.
• Write a program to check if a number is a happy number using a set.
• Write a program to find the median of two sorted arrays of different sizes.
• Write a program to implement a basic contact book that stores names and phone numbers.
• Write a program to check if a string is a valid binary search tree representation.