Title arial bold 28pt Dr. Adrian Euler adrian. .uk Lecture 3 & 4 Program Design & User-Defined Functions SMM283 Introduction to Python www.cass.city.ac.uk 1 “… the more slow and dim-witted your pupil, the more you have to break things down into more and more simple ideas. And that’s really the essence of programming.” From Dirk […]
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COMP2521 Data Structures & Algorithms Week 1.1 Introduction Relevance to your program Assumed Knowledge Assume that you are at least a mediocre C programmer Produce a program from a specification Use fundamental data structures (char, int, float, arrays, structs, pointers, linkedlists) Need to revise? Structs Pointers Malloc Linked Lists https://www.cse.unsw.edu.au/~cs2521/18s2/videos/structs.html https://www.cse.unsw.edu.au/~cs2521/18s2/videos/pointers.html https://www.cse.unsw.edu.au/~cs2521/18s2/videos/malloc.html https://www.cse.unsw.edu.au/~cs2521/18s2/videos/linked_list.html Why
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COMP2521 Data Structures & Algorithms Week 2.1 Performance Analysis 1 In this lecture Why? Understanding the time and storage demands of different data structures and algorithms is critical in writing the right code for a program What? Data Structures Algorithms Pseudocode Time Complexity Space Complexity 2 Measuring Literal Program Run Time For any linux
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COMP2521 Data Structures & Algorithms Week 3.2 Balancing Binary Search Trees 1 In this lecture Why? Binary Search Trees will often slowly lead to more imbalanced trees, so we need to develop strategies to prevent that. What? Tree Rotations Insertions at root Tree partitioning 2 BST balance as it grows When you insert into
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COMP2521 Data Structures & Algorithms Week 4.1 GDB 1 In this lecture Why? Debugging with print statements is not a scalable solution to debugging very complex or longprograms What? GDB Valgrind 2 Basis of lecture While this lab isn’t marked, we do expect students to complete it. If you seek help during labs
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COMP2521 Data Structures & Algorithms Week 1.4 Recursion 1 In this lecture Why? While you don’t need recursion to solve a number of problems, its a programming technique that can substantially simplify your source code What? Recursion 2 Recursion Recursion is a programming pattern where a function calls itself. Typically, this happens during some
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COMP2521 Data Structures & Algorithms Week 3.1 Trees & Binary Search Trees 1 In this lecture Why? To understand the what, how, and why of what binary tree data structures are, as they are a fundamental set of data structure + algorithms for efficient programs What? Trees Binary Search Trees (BST) Operations on BSTs Representing
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COMP2521 Data Structures & Algorithms Week 4.3 2-3-4 Trees (B-Tree of order 4) 1 In this lecture Why? Storing one item per node results in a lot of traversals happening, which can lead to slower lookups in trees What? 2-3-4 Trees Data Structure Insertion Pseudocode 2 Search Cost When analysing search costs in BSTs:
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COMP2521 Data Structures & Algorithms Week 2.2 Abstract Data Types (ADTs) 1 In this lecture Why? ADTs are a fundamental concept of writing robust software, and of being able to work with other people What? ADT definition ADT usage ADT implementation 2 ADTs 3 . 1 ADTs What is a data type? 3 .
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COMP2521 Data Structures & Algorithms Week 4.2 AVL Trees 1 In this lecture Why? Rebalancing methods often have an O(n) worse case, and we want to find something with O(log(n)) worst case. What? AVL Tree Overview Examples Pseudocode 2 AVL Tree AVL trees fix imbalances as soon as they occur. It aims to have the
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