Priority Queue

Duration: 3 min

This video lesson is available to enrolled students.

Return to /learn/COCUBES-PREPARATION/data-structures/queue/priority-queues-variants/asset-priority-queue after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. Quantitative Aptitude: Number System, Divisibility Rules, HCF LCM, Percentage, Ratio and Proportion (Ratios), Average, Profit and Loss, Simple Interest and Compound Interest, Mixture and Alligation, Partnership, Age Problems, Time and Work, Pipe and Cistern, Speed Time and Distance, Algebra, Arithmetic, Data Interpretation, Sequence and Series (Series), Logarithm, Powers and Exponents (Surds and Indices), Permutation and Combination, Probability, Speed Mathematics and Basic Mathematics, Trigonometry
  2. Logical Reasoning: Coding Decoding, Blood Relations, Directions (Direction Test), Ranking, Order and Sequence, Seating Arrangements, Puzzle Solving (Puzzles), Data Arrangement, Syllogisms, Inequality, Data Sufficiency, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Series (Number and Letter Series) (Numerical Relations and Reasoning), Venn Diagram, Logical Sequence Of Words, Calendar, Clock, Cubes & Dices, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning)
  3. Verbal Ability: Noun, Pronoun, Adjectives, Verb, Adverb, Tenses, Subject Verb Agreement (Verb Noun Agreement), Articles, Preposition, Conjunction, Modals, Determiner, Vocabulary, 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), Active Passive Voice (Voice), Direct and Indirect Speech, Sentence Construction
  4. Data Structures (Domain Test): Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  5. Algorithms (Domain Test): Algorithm Analysis, Sorting Algorithms, Time Complexity Analysis, Greedy Algorithms
  6. OOPs (Domain Test): Object Oriented Programming (OOPS)
  7. DBMS (Domain Test): 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
  8. SQL (Domain Test): SQL
  9. Operating Systems (Domain Test): 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
  10. Computer Networks (Domain Test): 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, Mobile Technology, Cloud Computing and IoT, Cyber and Info Security
  11. Coding: Coding Questions by Yash Sir, C Programming by Yash Sir, Programming in C++, Java, Python for Placements by Yash Sir
  12. Written English Test: English Writing Ability
  13. Psychometric Test: Behavioral Assessment (Behavioral Competency Profiling) (Psychometric Test)
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

The lecture provides a foundational definition of a Priority Queue, distinguishing it from standard linear data structures. The core concept is that every element carries a priority value, which dictates the sequence of deletion and processing. The instructor emphasizes two critical rules: elements with higher priority are always processed before those with lower priority, and elements sharing the same priority are processed in the order they were added (FIFO). To illustrate this, the instructor transitions from the slide to a whiteboard demonstration, sketching a linked list structure to visualize how these elements are stored and accessed.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    In the first segment, the instructor reads the definition from the slide, highlighting the text 'An element of higher priority is processed before any element of lower priority.' He also points out the rule for equal priorities: 'Two element with the same priority are processed according to the order in which they were added to the queue.' He begins the visual aid by drawing a series of empty rectangular boxes connected by arrows, representing the nodes of a linked list. This setup prepares the viewer to see how data and priority values are paired within each node. The slide title 'Priority Queue' is underlined in red, and the 'KnowledgeGate' watermark is visible.

  2. 2:00 – 3:16 02:00-03:16

    In the second segment, the instructor fills the drawn nodes with specific data and priority pairs using red ink. He labels the nodes sequentially as [a|1], [b|2], [c|3], [d|3], and [e|5]. This notation clearly separates the data element (e.g., 'a') from its assigned priority (e.g., '1'). He draws arrows to link them, forming a complete list. To demonstrate the processing rule, he draws a cross through the first node [a|1], indicating that this element is being deleted or processed first because it has the highest priority (lowest number). He also isolates a box labeled [a|1] separately to emphasize the specific element being removed from the queue structure. He writes an 'F' near the start of the list to denote the front.

The synthesis connects the theoretical rules to the practical drawing. The visual progression from empty boxes to labeled nodes [a|1] through [e|5] reinforces how priority values dictate the sequence of operations. The final act of crossing out a node visually cements the concept of 'deletion' based on priority rather than arrival time. The instructor, identified as Sanchit Jain Sir, effectively uses the red ink drawings to contrast the abstract definition with a concrete implementation example.

Loading lesson…