More Problems

• Write a program to find the longest consecutive sequence of elements in an unsorted array.
• Write a program to check if a number can be expressed as the sum of three distinct prime numbers.
• Write a program to implement a binary search tree with search, insert, and delete functions.
• Write a program to check if a string contains balanced parentheses using recursion.
• Write a program to find the longest path in a directed acyclic graph (DAG) using dynamic programming.
• Write a program to implement the A* search algorithm for pathfinding in a grid.
• Write a program to check if a binary tree is a valid binary search tree.
• Write a program to find the longest palindromic substring using dynamic programming.