Push Operation On Stack

Duration: 6 min

This video lesson is available to enrolled students.

Inside: a video lesson and guided study material.

Module outline

About Course: About the Course
Paper 2 | Digital Logic: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Floating Point Rep
Paper 2 | Computer Organization And Architecture: Basics of COA, Cache Memory Organization, Input Output Organisation, Pipelining, Control Unit Design, Instr Formats & Modes, Programming the Basic Computer
Paper 2 | Analog And Digital Communication: Introduction to Communication Systems & Random Signals, Analog Communication Systems, Information Theory & Digital Communication Fundamentals, Digital Modulation & Detection Techniques, Error Control, Synchronization & Multiple Access Techniques
Paper 2 | Programming in C: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
Paper 2 | Data Structures And Programming: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Java, OOPS with C++, Java Fundamentals, Array, String, IO & References
Paper 2 | Algorithms: Algorithm Analysis, Sorting Algorithms, Time Complexity Analysis, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos
Paper 2 | Compiler Design: Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
Paper 2 | Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management, Unix OS, Linux OS
Paper 2 | Databases: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, Relational Calculus, File Organization & Indexing, Transaction Management, Concurrency Control
Paper 2 | Information Systems and Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
Paper 2 | Computer Networks: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware Basics
Paper 2 | Internet & Web Technologies: Website, Browser & Services, Internet Fundamentals, Web Design & Development, Protocols & Services, Web Publishing & Hosting, Server Side & Security, Emerging Technologies, HTML Basics, JavaScript-Basics, CSS, XML, HTML5
Paper 2 | Cyber Security And Emerging Technologies: Emerging Tech Trends
Paper 2 | Cloud Technology: Cloud Computing
Paper 2 | Probability and statistics: Probability, Statistics
Paper-1 English: Vocabulary, Preposition, Articles, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Cloze Test (Cloze Passage), Sentence Construction
Paper 1 General Mental Ability & Logical reasoning: Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Percentage, Average, Powers and Exponents (Surds and Indices), Algebra, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Pipe and Cistern, Mensuration and Geometry, Mental Ability, Age Problems, Partnership, Arithmetic, Speed Mathematics and Basic Mathematics, Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Selection Decision Table (Decision Making), Logical Sequence Of Words, Venn Diagram, Analogy
Paper-1 General Knowledge & Current Affairs: State Wise GK, History, Geography, GK- Current Affairs, Static General Knowledge
Full Length Mock Test:

AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video provides a detailed explanation of the "Push operation" within the context of stack data structures. The lecture begins by displaying a formal definition on the screen, explaining that pushing involves adding a new element to the top of the stack, which increments the top pointer by one. It also defines the "overflow condition" as the state where the array is full and cannot accommodate new elements. The instructor then transitions to a visual demonstration, drawing a ladder-like structure to represent the stack memory. He defines the function signature and walks through the algorithmic steps required to implement the push operation, including overflow checking and pointer manipulation.

Chapters

0:00 – 2:00 00:00-02:00
The video opens with a static slide defining "Push operation". The text reads: "The process of adding new element to the top of stack is called push operation... in the case the array is full... it is called over-flow condition." The instructor underlines the phrase "to the top of stack is called push operation" to emphasize the insertion point. He then draws a vertical ladder structure on the whiteboard to visualize the stack. He labels the rungs with indices 0, 1, 2, 3, 4. He writes the function prototype push(S, N, TOP, ITEM) on the left side. He populates the drawn stack with characters 'a', 'b', 'c', 'd' at indices 0, 1, 2, 3, and marks the current top pointer at index 3. He explains that 'a' is at the bottom and 'd' is at the top.
2:00 – 5:00 02:00-05:00
The instructor begins writing the algorithm logic in red ink. He starts with a conditional check: if (TOP == N-1). He explains that if the top pointer equals the size minus one, the stack is full. In this case, he writes "write overflow & exit" to indicate the program should handle the error and stop. If the condition is false, he proceeds to the next step: TOP = TOP + 1. He explains that the top pointer must be incremented first to point to the next available empty slot. Finally, he writes S[TOP] = ITEM to show where the new data is stored. He emphasizes that the insertion happens at the new top position. He writes "end" or "exit" at the bottom of the algorithm.
5:00 – 5:42 05:00-05:42
In the final segment, the instructor reviews the complete algorithm written on the board. The screen shows the full logic: checking for overflow, incrementing the top pointer, and assigning the item. He verbally summarizes the process, reinforcing that the top pointer moves up before the new element is placed. The video concludes with the full algorithm visible, serving as a reference for the push operation implementation. He points to the different parts of the code while speaking.

The lecture effectively bridges the gap between theoretical definition and practical implementation of the push operation. By using a visual ladder analogy and step-by-step algorithm writing, the instructor clarifies the sequence of operations, particularly the critical order of incrementing the top pointer before data insertion and the necessity of overflow checks. This structured approach helps students understand the underlying mechanics of stack manipulation in computer science.