More Problems

• Write a program to check if a string is a valid time in the format HH:MM
• Write a program to implement a binary search tree with insertion, deletion, and traversal operations.
• Write a program to find the shortest path in a weighted graph using the A* algorithm.
• Write a program to implement the Dijkstra algorithm for finding the shortest paths from a source node to all other nodes in a graph.
• Write a program to detect a cycle in a directed graph using depth-first search (DFS).
• Write a program to implement the QuickSort algorithm with median-of-three pivot selection.
• Write a program to find the longest increasing subsequence using dynamic programming.
• Write a program to solve the "N-Queens Problem" using backtracking.