“C Programming in Coding”
1. What is a linked list? Explain its structure (nodes with data and pointers) and advantages over arrays (dynamic size, efficient insertions/deletions).
2. How to create and traverse a singly linked list? Write code to initialize, insert nodes at the beginning/end, and print elements.
3. Implement insertion and deletion in a linked list. Cover cases like inserting/deleting at head, tail, or middle (e.g., by position or value).
4. Detect and remove loops in a linked list. Use Floyd’s cycle detection algorithm (tortoise and hare).
5. Reverse a linked list. Iterative and recursive approaches.
6. Find the middle element of a linked list. Using slow and fast pointers.
7. Merge two sorted linked lists. Into a single sorted list.
8. Convert an array to a linked list and vice versa. Basic conversions.
### Higher-Level/Advanced Study Questions on Lists in C Programming
For deeper understanding, exams often test efficiency, edge cases, and optimizations:
1. Implement a doubly linked list. Include operations like bidirectional traversal, insertion/deletion with prev/next pointers.
2. Circular linked list operations. Insertion, deletion, and traversal in a circular structure (no NULL tail).
3. Time and space complexity analysis. Compare linked lists vs. arrays for operations like search, insert, delete (e.g., O(1) for linked list head insert vs. O(n) for array).
4. Handle edge cases in linked lists. Empty lists, single-node lists, memory allocation failures.
5. Implement stack/queue using linked lists. Push/pop for stack, enqueue/dequeue for queue.
6. Sort a linked list. Using merge sort (efficient for linked structures).
7. Find intersection/union of two linked lists. For sets of elements.
8. Memory management in linked lists. Avoiding leaks, using malloc/free, and handling dangling pointers.
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