Push Operation On Stack

Duration: 6 min

This video lesson is available to enrolled students.

Return to /learn/NIACL-AO-IT-SPECIALIST/data-structure-it-specialist/stack/stack-basics-ops/asset-push-operation-on-stack after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. Quantitative Aptitude: Ratio and Proportion (Ratios), Data Interpretation, Mixture and Alligation, Permutation and Combination, Number System, Sequence and Series (Series), Speed Time and Distance, Speed Mathematics and Basic Mathematics, Algebra, Percentage, Profit and Loss, Simple Interest and Compound Interest, Powers and Exponents (Surds and Indices), Time and Work, Mensuration and Geometry, Partnership
  2. Reasoning Ability: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Seating Arrangements, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Directions (Direction Test), Ranking, Order and Sequence, Syllogisms, Blood Relations, Puzzle Solving (Puzzles), Inequality, Machine Input-Output
  3. English Language: Vocabulary, Noun, Subject Verb Agreement (Verb Noun Agreement), Adjectives, Tenses, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Cloze Test (Cloze Passage), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Construction, Pronoun, Preposition, Conjunction, Adverb, Verb, Modals, Articles, Determiner, Interjection
  4. General Awareness: Evolution of Indian Banking (Banking & Financial Awareness), GK- Current Affairs, Static General Knowledge, Indian Economy
  5. C Concepts + MCQs (IT Specialist): C Programming by Yash Sir, C Language Core
  6. Java (IT Specialist): Java
  7. Python (IT Specialist): Python for Placements by Yash Sir, Python Basics
  8. OOPs (IT Specialist): Object Oriented Programming (OOPS)
  9. DBMS (IT Specialist): Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, Relational Calculus, Transaction Management, Concurrency Control, Database Recovery, ORDBMS, Database Security & Authorization, Query Processing & Optimization, Enhanced Data Models, Data Warehousing & Mining, Big Data Systems, NoSQL
  10. SQL (IT Specialist): SQL
  11. Software Engineering (IT Specialist): Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  12. Data Structure (IT Specialist): Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  13. Operating System (IT Specialist): Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Windows OS, Linux OS, Security, Distributed Systems, Virtual Machines
  14. Compiler Design (IT Specialist): 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
  15. Computer Architecture (IT Specialist): Basics of COA, Floating Point Rep, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations, Multiprocessors, Programming the Basic Computer
  16. Data Communication & Networking (IT Specialist): 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, Network Security
  17. Descriptive Test (Main Exam): English Writing Ability
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

  1. 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. 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.

  3. 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.

Loading lesson…