Linked list Practice Questions
Duration: 1 min
This video lesson is available to enrolled students.
Inside: a video lesson and guided study material.
Module outline
- About Course: BTSC About Course
- Basics of Computer Science: Basics of COA, Number System, Number Representation
- Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory
- Data Structures & Algorithms: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms
- Database Management Systems(DBMS): Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Relational Algebra, SQL, Transaction Management, Concurrency Control, Database Recovery
- Networking and Internet: Introduction to CN, Data Communication, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Application Layer, Hardware Basics, Network Access Technologies, Network Security
- Cyber Security Basics: Cyber Threats and Malware Attacks, Role of Internet and Web Services, Electronic Data Interchange and E-Commerce, Cyber Safety and Security
- C Programming (Programming Fundamentals): C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
- C++, OOPs & Java (Programming Fundamentals): Java, OOPS with C++
- Python (Programming Fundamentals): Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules
- Web Development Basics: Internet Fundamentals, Web Design & Development, Protocols & Services, Web Publishing & Hosting, Server Side & Security, Emerging Technologies, JavaScript-Basics, HTML Basics
- Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing
- Software and Hardware Tools: MS Office Applications, Unix OS, Linux OS
- Emerging Trends. AI & Social Ethics: Artificial Intelligence, Emerging Tech Trends, Society, Law & Ethics
- Full Mock Test:
AI summary & chapters
AI Summary
An AI-generated summary of this video lecture.
The video presents a C programming problem involving a recursive function operating on a linked list. The linked list is defined as 1->2->3->4->5->6. The function fun takes a pointer to a node. The instructor analyzes the code line by line. First, he identifies the base case if(start == NULL) return;. Then he notes the initial print statement printf("%d ", start->data);. The core logic lies in the recursive call fun(start->next->next), which advances the pointer by two nodes instead of one. He draws a diagram on the screen to trace the execution flow. The recursion proceeds: Node 1 calls Node 3, Node 3 calls Node 5, and Node 5 calls NULL. Once the base case is hit, the function returns, and the subsequent print statements execute in reverse order of the calls. This results in the sequence 1, 3, 5 being printed during the descent, and 5, 3, 1 being printed during the ascent. The final output is 1 3 5 5 3 1, which corresponds to option (D).
Chapters
0:00 – 1:14 00:00-01:14
The instructor introduces the problem statement displayed on screen: "Q What is the output of following function for start pointing to first node of following linked list? 1->2->3->4->5->6". He reads the C code void fun(struct node* start) and points out the initial print statement printf("%d ", start->data);.
The lecture demonstrates how to trace recursive functions on data structures. By breaking down the code into base cases and recursive steps, and visualizing the call stack, the instructor shows how to predict the output of complex logic involving pointer manipulation.