12.12 Range Function

Duration: 8 min

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Module outline

  1. About the Course: About the Course
  2. Paper-1 & 2 | Basic Numeracy: Ratio and Proportion (Ratios), Divisibility Rules, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Percentage, Average, Mensuration and Geometry, Age Problems, Arithmetic, Statistics, Probability, Profit and Loss, Simple Interest and Compound Interest, Partnership, Speed Mathematics and Basic Mathematics, Algebra, Powers and Exponents (Surds and Indices), Time and Work, Pipe and Cistern, RSSB Specific Videos - Basic Numeracy
  3. Paper-1 & 2 | Data Interpretation: Data Interpretation
  4. Paper-1 & 2 | General Mental Ability: Mental Ability, RSSB Specific Videos - Mental Ability
  5. Paper-1 & 2 | Logical Reasoning and Analytical Ability: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Syllogisms, Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Venn Diagram, Analogy, Ranking, Order and Sequence, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Data Arrangement, Logical Sequence Of Words, Crypt Arithmetic
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  8. Paper-1 | General Awareness: State Wise GK, GK- Current Affairs
  9. Paper-2 | Fundamentals of Computer: Basics of COA, Number System, Floating Point Rep, Number Representation
  10. Paper - 2 | Digital Logic Systems: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits
  11. Paper-2 | Operating Systems: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Linux OS, Distributed Systems
  12. Paper-2 | Database Management System: 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
  13. Paper-2 | Data Structures: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  14. Paper-2 | C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  15. Paper 2 | Oops, C++, Java: Language Design, OOPS with C++, Java, .Net Programming, Java Fundamentals
  16. Paper 2 | Python: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  17. Paper 2 | Emerging Trends and AI: Emerging Tech Trends, Artificial Intelligence
  18. Paper-2 | Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Advanced Algorithms
  19. Paper 2 | Data Communication and Network Security: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, 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, Ethical Hacking
  20. Paper-2 I Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  21. Paper-2 | Computer Organization and Architecture: Cache Memory Organization, Input Output Organisation, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations
  22. Paper-2 | Web Development: JavaScript-Basics, HTML Basics, CSS, XML
  23. Pedagogy: Child Development, Concept of Pedagogy, Psychology, Theories, Inclusive Education, Experiential Pedagogy, Curriculum Framework & Reforms, National Education Policy (NEP) 2020
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  25. RSSB Paper 1 - Full Mock Tests:
  26. RSSB Paper 2 - Full Mock Tests:
  27. SCI Previous Year Papers:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This video is a comprehensive lecture on the Python `range()` function, presented by an instructor in front of a digital whiteboard. The lesson begins by introducing `range()` as a built-in function used to generate sequences of numbers, commonly with loops, and highlights its memory efficiency. The instructor then details the function's syntax, `range(start, stop, step)`, and explains that the `stop` value is always excluded. Using on-screen examples, the lecture demonstrates how to use `range()` with one, two, and three arguments, including negative steps to create descending sequences. The video also shows how to convert a `range` object into a list using the `list()` function and concludes by summarizing key characteristics, such as the requirement that the step cannot be zero and that `range()` returns a range object, not a list.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with the instructor introducing the topic, "Range Function," on a digital whiteboard. The on-screen text defines `range()` as a built-in function used to generate a sequence of numbers, commonly used with loops, and notes it generates numbers on demand, making it memory efficient. The instructor then begins to write the function's syntax, `range(start, stop, step)`, on the board, explaining the three parameters.

  2. 2:00 – 5:00 02:00-05:00

    The instructor provides a detailed example of `range(1, 6, 1)`, writing the code and then listing the resulting sequence: 1, 2, 3, 4, 5. He emphasizes that the stop value (6) is excluded, a key characteristic of the function. He then demonstrates another example, `range(1, 10, 2)`, to show how a step value of 2 creates a sequence of odd numbers: 1, 3, 5, 7, 9. The instructor also shows how to use `range()` with a single argument, `range(5)`, which defaults to a start of 0 and a step of 1, generating the sequence 0, 1, 2, 3, 4.

  3. 5:00 – 8:12 05:00-08:12

    The lecture continues with a demonstration of a negative step, `range(10, 0, -2)`, which generates a descending sequence: 10, 8, 6, 4, 2. The instructor then shows how to convert a `range` object into a list using `numbers = list(range(1, 6))`. The final segment summarizes the important characteristics of the `range()` function, including that the stop value is always excluded, the step cannot be zero, it supports both positive and negative steps, and it returns a `range` object, not a list. The video concludes with a "Thanks" message.

The video provides a clear, step-by-step tutorial on the Python `range()` function. It effectively progresses from a basic definition to detailed syntax and practical examples, using on-screen code and handwritten annotations to reinforce key concepts. The instructor's methodical approach, which includes demonstrating various parameter combinations and highlighting the function's memory-efficient nature, makes the material accessible for learners. The lesson concludes by consolidating the core principles, ensuring a solid understanding of how to use `range()` in Python programming.

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