C++ Prompts For Mastering DSA

DSA serves as the foundation for software development, assisting programmers in effectively resolving challenging issues. Programming mastery requires an understanding of and practice with DSA, and C++'s speed, memory control, and extensive standard library make it a great platform for putting these ideas into practice. These 30 C++ prompts will walk you through a variety of important DSA topics, whether you're getting ready for coding interviews or want to improve your problem-solving abilities.

In addition to honing your C++ abilities, solving these fundamental problems will help you get ready for technical interviews and solve problems in the real world. Working through these DSA prompts will improve your foundation and confidence in managing challenging coding tasks, regardless of your level of experience as a developer.

C++ Prompts for Mastering Data Structures and Algorithms

Array and String

1. Write a C++ program to rotate an array of integers to the right by `k` steps.

2. Implement a function to find the maximum subarray sum using Kadane's Algorithm in C++.

3. Write a C++ function to reverse a string without using extra space.

4. Create a C++ program to find the longest palindromic substring in a given string.

5. Implement a function to check if two strings are anagrams of each other.

6. Write a C++ function to merge two sorted arrays into a single sorted array.

7. Write a C++ program to find the intersection of two arrays.

 Linked List

8. Implement a C++ function to detect if a linked list has a cycle.

9. Write a function to reverse a singly linked list in C++.

10. Create a C++ program to remove the `n`-th node from the end of a linked list.

11. Write a C++ function to find the middle element of a linked list in one pass.

12. Implement a C++ program to merge two sorted linked lists into one sorted linked list.

13. Write a C++ function to flatten a multi-level doubly linked list.

14. Create a C++ function to find the intersection point of two linked lists.

 Stack and Queue

15. Write a C++ program to implement a stack using two queues.

16. Implement a C++ function to evaluate a postfix expression.

17. Write a C++ program to check if an expression has balanced parentheses.

18. Create a C++ program to implement a queue using two stacks.

19. Write a C++ function to implement a sliding window maximum.

20. Write a C++ program to implement the 'next greater element' problem using a stack.

 Binary Trees and Binary Search Trees

21. Implement a C++ function to find the height of a binary tree.

22. Write a C++ program to perform an in-order traversal of a binary search tree (BST).

23. Create a C++ function to check if a binary tree is a valid binary search tree.

24. Write a C++ function to find the lowest common ancestor (LCA) of two nodes in a binary tree.

25. Write a C++ program to convert a sorted array into a balanced binary search tree.

 Graphs and Shortest Path Algorithms

26. Write a C++ program to implement Depth First Search (DFS) and Breadth First Search (BFS) in an undirected graph.

27. Implement Dijkstra’s algorithm to find the shortest path in a graph with non-negative weights.

28. Write a C++ program to detect a cycle in a directed graph using DFS.

29. Implement a C++ function to find the shortest path in a maze using BFS.

30. Create a C++ function to detect if a graph is bipartite using BFS or DFS.