More Problems

• Write a program to implement a simple online shopping application with payment processing.
• Write a program to check if a string is a valid Anagram using character counting.
• Write a program to find the longest increasing subsequence using patience sorting.
• Write a program to implement the A* pathfinding algorithm on a grid.
• Write a program to check if two strings are anagrams of each other using character frequency.
• Write a program to find the shortest path from the top-left to the bottom-right of a grid with obstacles.
• Write a program to implement a basic event management system with RSVP functionality.
• Write a program to check if a number is a friendly number.