More Problems

• Write a program to check if a string is a valid hexadecimal number.
• Write a program to find the longest path in a directed graph.
• Write a program to implement a basic online multiplayer game.
• Write a program to check if a string can be rearranged to form a palindrome using character counts.
• Write a program to find the shortest path between two nodes in a weighted graph using Dijkstras algorithm.
• Write a program to implement a simple version of the game "Rock-Paper-Scissors-Lizard-Spock."
• Write a program to check if a number is a perfect number using its divisors.
• Write a program to find the maximum depth of a binary tree.