More Problems

• Write a program to implement the Dijkstra algorithm for finding the shortest path in a weighted graph.
• Write a program to check if a number can be expressed as the sum of three prime numbers.
• Write a program to find the longest substring with at most k distinct characters.
• Write a program to implement a basic online learning management system.
• Write a program to check if a string is a valid Roman numeral.
• Write a program to find the total number of distinct characters in a string using a hash table.
• Write a program to implement a simple online game of Tic-Tac-Toe with an AI opponent.
• Write a program to check if a number is a happy number using the Floyds cycle detection algorithm.