Dynamic Programming for Coding Interviews

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Publisher : Notion Press
ISBN 13 : 194655670X
Total Pages : 145 pages
Book Rating : 4.9/5 (465 download)

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Book Synopsis Dynamic Programming for Coding Interviews by : Meenakshi

Download or read book Dynamic Programming for Coding Interviews written by Meenakshi and published by Notion Press. This book was released on 2017-01-18 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: I wanted to compute 80th term of the Fibonacci series. I wrote the rampant recursive function, int fib(int n){ return (1==n || 2==n) ? 1 : fib(n-1) + fib(n-2); } and waited for the result. I wait… and wait… and wait… With an 8GB RAM and an Intel i5 CPU, why is it taking so long? I terminated the process and tried computing the 40th term. It took about a second. I put a check and was shocked to find that the above recursive function was called 204,668,309 times while computing the 40th term. More than 200 million times? Is it reporting function calls or scam of some government? The Dynamic Programming solution computes 100th Fibonacci term in less than fraction of a second, with a single function call, taking linear time and constant extra memory. A recursive solution, usually, neither pass all test cases in a coding competition, nor does it impress the interviewer in an interview of company like Google, Microsoft, etc. The most difficult questions asked in competitions and interviews, are from dynamic programming. This book takes Dynamic Programming head-on. It first explain the concepts with simple examples and then deep dives into complex DP problems.

Programming Interview Problems

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Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.5/5 (581 download)

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Book Synopsis Programming Interview Problems by : Leonardo Rossi

Download or read book Programming Interview Problems written by Leonardo Rossi and published by . This book was released on 2020-11-05 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Are you preparing for a programming interview? Would you like to work at one of the Internet giants, such as Google, Facebook, Amazon, Apple, Microsoft or Netflix? Are you looking for a software engineer position? Are you studying computer science or programming? Would you like to improve your programming skills? If the answer to any of these questions is yes, this book is for you! The book contains very detailed answers and explanations for the most common dynamic programming problems asked in programming interviews. The solutions consist of cleanly written code, with plenty of comments, accompanied by verbal explanations, hundreds of drawings, diagrams and detailed examples, to help you get a good understanding of even the toughest problems. The goal is for you to learn the patterns and principles needed to solve even dynamic programming problems that you have never seen before. Here is what you will get: A 180-page book presenting dynamic programming problems that are often asked in interviews. Multiple solutions for each problem, starting from simple but naive answers that are gradually improved until reaching the optimal solution. Plenty of detailed examples and walkthroughs, so that you can see right away how the solution works. 350+ drawings and diagrams which cater towards visual learners. Clear and detailed verbal explanations of how to approach the problems and how the code works. Analysis of time and space complexity. Discussion of other variants of the same problem, with solutions. Unit tests, including the reasoning behind choosing each one (edge case identification, performance evaluation etc.). Suggestions regarding what clarification questions you should ask, for each problem. Multiple solutions to the problems, where appropriate. General Python implementation tips. Wishing you the best of luck with your interviews!

Cracking the Coding Interview

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Author :
Publisher : CreateSpace
ISBN 13 : 9781466208681
Total Pages : 0 pages
Book Rating : 4.2/5 (86 download)

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Book Synopsis Cracking the Coding Interview by : Gayle Laakmann McDowell

Download or read book Cracking the Coding Interview written by Gayle Laakmann McDowell and published by CreateSpace. This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in the 5th edition, Cracking the Coding Interview gives you the interview preparation you need to get the top software developer jobs. This book provides: 150 Programming Interview Questions and Solutions: From binary trees to binary search, this list of 150 questions includes the most common and most useful questions in data structures, algorithms, and knowledge based questions. 5 Algorithm Approaches: Stop being blind-sided by tough algorithm questions, and learn these five approaches to tackle the trickiest problems. Behind the Scenes of the interview processes at Google, Amazon, Microsoft, Facebook, Yahoo, and Apple: Learn what really goes on during your interview day and how decisions get made. Ten Mistakes Candidates Make -- And How to Avoid Them: Don't lose your dream job by making these common mistakes. Learn what many candidates do wrong, and how to avoid these issues. Steps to Prepare for Behavioral and Technical Questions: Stop meandering through an endless set of questions, while missing some of the most important preparation techniques. Follow these steps to more thoroughly prepare in less time.

Coding Interviews

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Publisher : Apress
ISBN 13 : 1430247622
Total Pages : 292 pages
Book Rating : 4.4/5 (32 download)

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Book Synopsis Coding Interviews by : Harry He

Download or read book Coding Interviews written by Harry He and published by Apress. This book was released on 2013-01-31 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about coding interview questions from software and Internet companies. It covers five key factors which determine performance of candidates: (1) the basics of programming languages, data structures and algorithms, (2) approaches to writing code with high quality, (3) tips to solve difficult problems, (4) methods to optimize code, (5) soft skills required in interviews. The basics of languages, algorithms and data structures are discussed as well as questions that explore how to write robust solutions after breaking down problems into manageable pieces. It also includes examples to focus on modeling and creative problem solving. Interview questions from the most popular companies in the IT industry are taken as examples to illustrate the five factors above. Besides solutions, it contains detailed analysis, how interviewers evaluate solutions, as well as why they like or dislike them. The author makes clever use of the fact that interviewees will have limited time to program meaningful solutions which in turn, limits the options an interviewer has. So the author covers those bases. Readers will improve their interview performance after reading this book. It will be beneficial for them even after they get offers, because its topics, such as approaches to analyzing difficult problems, writing robust code and optimizing, are all essential for high-performing coders.

Think Like a Programmer

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Publisher : No Starch Press
ISBN 13 : 1593274564
Total Pages : 260 pages
Book Rating : 4.5/5 (932 download)

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Book Synopsis Think Like a Programmer by : V. Anton Spraul

Download or read book Think Like a Programmer written by V. Anton Spraul and published by No Starch Press. This book was released on 2012-08-12 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: The real challenge of programming isn't learning a language's syntax—it's learning to creatively solve problems so you can build something great. In this one-of-a-kind text, author V. Anton Spraul breaks down the ways that programmers solve problems and teaches you what other introductory books often ignore: how to Think Like a Programmer. Each chapter tackles a single programming concept, like classes, pointers, and recursion, and open-ended exercises throughout challenge you to apply your knowledge. You'll also learn how to: –Split problems into discrete components to make them easier to solve –Make the most of code reuse with functions, classes, and libraries –Pick the perfect data structure for a particular job –Master more advanced programming tools like recursion and dynamic memory –Organize your thoughts and develop strategies to tackle particular types of problems Although the book's examples are written in C++, the creative problem-solving concepts they illustrate go beyond any particular language; in fact, they often reach outside the realm of computer science. As the most skillful programmers know, writing great code is a creative art—and the first step in creating your masterpiece is learning to Think Like a Programmer.

Dynamic Programming for the Day Before Your Coding Interview

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Author :
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.6/5 (49 download)

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Book Synopsis Dynamic Programming for the Day Before Your Coding Interview by : Ue Kiao

Download or read book Dynamic Programming for the Day Before Your Coding Interview written by Ue Kiao and published by . This book was released on 2020-04-28 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic Programming is a fundamental algorithmic technique which is behind solving some of the toughest computing problems.In this book, we have covered some Dynamic Programming problems which will give you the general idea of formulating a Dynamic Programming solution and some practice on applying it on a variety of problems.Some of the problems we have covered are: * Permutation coefficientThis is a basic problem but is significant in understanding the idea behind Dynamic Programming. We have used this problem to: * Present the two core ideas of Dynamic Programming to make the idea clear and help you understand what Dynamic Programming mean. * Show another approach which can same performance (in terms of time complexity) and understand how it is different from our Dynamic Programming approach* Longest Common SubstringThis is an important problem as we see how we can apply Dynamic Programming in string problems. In the process, we have demonstrated the core ideas of handling string data which helps in identifying the cases when Dynamic Programming is the most efficient approach.* XOR valueThis is another significant problem as we are applying Dynamic Programming on a Number Theory problem more specifically problem involving subset generation. The search space is exponential in size but with our efficient approach, we can search the entire data in polynomial time which is a significant improvement.This brings up a fundamental power of Dynamic Programming: Search exponential search space in polynomial time* K edgesIn line with our previous problems, in this problem, we have applied Dynamic Programming in a graph-based problem. This is a core problem as in this we learn that: * Dynamic Programming makes the solution super-efficient * Extending the Dynamic Programming solution using Divide and Conquer enables us to solve it more efficientlyThis problem shows a problem where Dynamic Programming is not the most efficient solution but is in the right path.We have covered other relevant solutions and ideas as well so that you have the complete idea of the problems and understand deeply the significance of Dynamic Programming in respect to the problems.This book has been carefully prepared and reviewed by Top programmers and Algorithmic researchers and members of OpenGenus. We would like to thank Aditya Chatterjee and Ue Kiao for their expertise in this domain and reviews from professors at The University of Tokyo and Tokyo Institute of Technology.Read this book now and ace your upcoming coding interview. This is a must read for everyone preparing for Coding Interviews at top companies.

Elements of Programming Interviews

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Author :
Publisher : EPI
ISBN 13 : 1479274836
Total Pages : 504 pages
Book Rating : 4.4/5 (792 download)

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Book Synopsis Elements of Programming Interviews by : Adnan Aziz

Download or read book Elements of Programming Interviews written by Adnan Aziz and published by EPI. This book was released on 2012-10-11 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: The core of EPI is a collection of over 300 problems with detailed solutions, including 100 figures, 250 tested programs, and 150 variants. The problems are representative of questions asked at the leading software companies. The book begins with a summary of the nontechnical aspects of interviewing, such as common mistakes, strategies for a great interview, perspectives from the other side of the table, tips on negotiating the best offer, and a guide to the best ways to use EPI. The technical core of EPI is a sequence of chapters on basic and advanced data structures, searching, sorting, broad algorithmic principles, concurrency, and system design. Each chapter consists of a brief review, followed by a broad and thought-provoking series of problems. We include a summary of data structure, algorithm, and problem solving patterns.

Dynamic Programming for Coding Interviews

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Author :
Publisher : Independently Published
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.3/5 (864 download)

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Book Synopsis Dynamic Programming for Coding Interviews by : Meenakshi Rawat

Download or read book Dynamic Programming for Coding Interviews written by Meenakshi Rawat and published by Independently Published. This book was released on 2023-03-10 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: On a computer, where the non-recursive Dynamic Programming solution to compute the n'th Fibonacci term takes 1 second to find the 40th term, the corresponding recursive solution will take approximately 56 hours to find the same 40th Fibonacci term. It is because the small innocent-looking recursive solution of Fibonacci takes exponential time, whereas the DP solution takes linear time. Dynamic programming questions are the most difficult to answer in competitions and interviews. In most coding competitions, a recursive solution will not pass all test cases. This book takes dynamic programming head-on.

Searching & Sorting for Coding Interviews

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Author :
Publisher : Notion Press
ISBN 13 : 1947988239
Total Pages : 278 pages
Book Rating : 4.9/5 (479 download)

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Book Synopsis Searching & Sorting for Coding Interviews by : Meenakshi, Kamal Rawat

Download or read book Searching & Sorting for Coding Interviews written by Meenakshi, Kamal Rawat and published by Notion Press. This book was released on 2017-11-07 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Searching & sorting algorithms form the back bone of coding acumen of developers. This book comprehensively covers In-depth tutorial & analysis of all major algorithms and techniques used to search and sort across data structures. All major variations of each algorithm (e.g. Ternary, Jump, Exponential, Interpolation are variations of Binary search). 110 real coding interview questions as solved examples and unsolved problems. Case studies of implementation of searching and sorting in language libraries. Introduction to how questions are asked and expected to answer on online competitive coding and hiring platforms like hackerrank.com, codechef.com, etc. Introduction to data structures.

Cracking Programming Interviews

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Publisher : CreateSpace Independent Publishing Platform
ISBN 13 : 1495459802
Total Pages : 525 pages
Book Rating : 4.4/5 (954 download)

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Book Synopsis Cracking Programming Interviews by : Sergei Nakariakov

Download or read book Cracking Programming Interviews written by Sergei Nakariakov and published by CreateSpace Independent Publishing Platform. This book was released on 2014-02-07 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part I Algorithms and Data Structures 1 Fundamentals Approximating the square root of a number Generating Permutation Efficiently Unique 5-bit Sequences Select Kth Smallest Element The Non-Crooks Problem Is this (almost) sorted? Sorting an almost sorted list The Longest Upsequence Problem Fixed size generic array in C++ Seating Problem Segment Problems Exponentiation Searching two-dimensional sorted array Hamming Problem Constant Time Range Query Linear Time Sorting Writing a Value as the Sum of Squares The Celebrity Problem Transport Problem Find Length of the rope Switch Bulb Problem In, On or Out The problem of the balanced seg The problem of the most isolated villages 2 Arrays The Plateau Problem Searching in Two Dimensional Sequence The Welfare Crook Problem 2D Array Rotation A Queuing Problem in A Post Office Interpolation Search Robot Walk Linear Time Sorting Write as sum of consecutive positive numbers Print 2D Array in Spiral Order The Problem of the Circular Racecourse Sparse Array Trick Bulterman’s Reshuffling Problem Finding the majority Mode of a Multiset Circular Array Find Median of two sorted arrays Finding the missing integer Finding the missing number with sorted columns Re-arranging an array Switch and Bulb Problem Compute sum of sub-array Find a number not sum of subsets of array Kth Smallest Element in Two Sorted Arrays Sort a sequence of sub-sequences Find missing integer Inplace Reversing Find the number not occurring twice in an array 3 Trees Lowest Common Ancestor(LCA) Problem Spying Campaign 4 Dynamic Programming Stage Coach Problem Matrix Multiplication TSP Problem A Simple Path Problem String Edit Distance Music recognition Max Sub-Array Problem 5 Graphs Reliable distribution Independent Set Party Problem 6 Miscellaneous Compute Next Higher Number Searching in Possibly Empty Two Dimensional Sequence Matching Nuts and Bolts Optimally Random-number generation Weighted Median Compute a^n Compute a^n revisited Compute the product a × b Compute the quotient and remainder Compute GCD Computed Constrained GCD Alternative Euclid’ Algorithm Revisit Constrained GCD Compute Square using only addition and subtraction Factorization Factorization Revisited Decimal Representation Reverse Decimal Representation Solve Inequality Solve Inequality Revisited Print Decimal Representation Decimal Period Length Sequence Periodicity Problem Compute Function Emulate Division and Modulus Operations Sorting Array of Strings : Linear Time LRU data structure Exchange Prefix and Suffix 7 Parallel Algorithms Parallel Addition Find Maximum Parallel Prefix Problem Finding Ranks in Linked Lists Finding the k th Smallest Element 8 Low Level Algorithms Manipulating Rightmost Bits Counting 1-Bits Counting the 1-bits in an Array Computing Parity of a word Counting Leading/Trailing 0’s Bit Reversal Bit Shuffling Integer Square Root Newton’s Method Integer Exponentiation LRU Algorithm Shortest String of 1-Bits Fibonacci words Computation of Power of 2 Round to a known power of 2 Round to Next Power of 2 Efficient Multiplication by Constants Bit-wise Rotation Gray Code Conversion Average of Integers without Overflow Least/Most Significant 1 Bit Next bit Permutation Modulus Division Part II C++ 8 General 9 Constant Expression 10 Type Specifier 11 Namespaces 12 Misc 13 Classes 14 Templates 15 Standard Library

Daily Coding Problem

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Publisher :
ISBN 13 : 9781793296634
Total Pages : 299 pages
Book Rating : 4.2/5 (966 download)

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Book Synopsis Daily Coding Problem by : Alex Miller

Download or read book Daily Coding Problem written by Alex Miller and published by . This book was released on 2019-01-31 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Daily Coding Problem contains a wide variety of questions inspired by real programming interviews, with in-depth solutions that clearly take you through each core concept. You'll learn about: * Linked Lists * Arrays * Heaps * Trees * Graphs * Randomized Algorithms * Backtracking * Dynamic Programming * Stacks and Queues * Bit Manipulation * System Design

Programming Interviews Exposed

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Publisher : John Wiley & Sons
ISBN 13 : 1118169387
Total Pages : 253 pages
Book Rating : 4.1/5 (181 download)

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Book Synopsis Programming Interviews Exposed by : John Mongan

Download or read book Programming Interviews Exposed written by John Mongan and published by John Wiley & Sons. This book was released on 2011-08-10 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pressure is on during the interview process but with the right preparation, you can walk away with your dream job. This classic book uncovers what interviews are really like at America's top software and computer companies and provides you with the tools to succeed in any situation. The authors take you step-by-step through new problems and complex brainteasers they were asked during recent technical interviews. 50 interview scenarios are presented along with in-depth analysis of the possible solutions. The problem-solving process is clearly illustrated so you'll be able to easily apply what you've learned during crunch time. You'll also find expert tips on what questions to ask, how to approach a problem, and how to recover if you become stuck. All of this will help you ace the interview and get the job you want. What you will learn from this book Tips for effectively completing the job application Ways to prepare for the entire programming interview process How to find the kind of programming job that fits you best Strategies for choosing a solution and what your approach says about you How to improve your interviewing skills so that you can respond to any question or situation Techniques for solving knowledge-based problems, logic puzzles, and programming problems Who this book is for This book is for programmers and developers applying for jobs in the software industry or in IT departments of major corporations. Wrox Beginning guides are crafted to make learning programming languages and technologies easier than you think, providing a structured, tutorial format that will guide you through all the techniques involved.

The The Complete Coding Interview Guide in Java

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Publisher : Packt Publishing Ltd
ISBN 13 : 1839219173
Total Pages : 788 pages
Book Rating : 4.8/5 (392 download)

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Book Synopsis The The Complete Coding Interview Guide in Java by : Anghel Leonard

Download or read book The The Complete Coding Interview Guide in Java written by Anghel Leonard and published by Packt Publishing Ltd. This book was released on 2020-08-28 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explore a wide variety of popular interview questions and learn various techniques for breaking down tricky bits of code and algorithms into manageable chunks Key FeaturesDiscover over 200 coding interview problems and their solutions to help you secure a job as a Java developerWork on overcoming coding challenges faced in a wide array of topics such as time complexity, OOP, and recursionGet to grips with the nuances of writing good code with the help of step-by-step coding solutionsBook Description Java is one of the most sought-after programming languages in the job market, but cracking the coding interview in this challenging economy might not be easy. This comprehensive guide will help you to tackle various challenges faced in a coding job interview and avoid common interview mistakes, and will ultimately guide you toward landing your job as a Java developer. This book contains two crucial elements of coding interviews - a brief section that will take you through non-technical interview questions, while the more comprehensive part covers over 200 coding interview problems along with their hands-on solutions. This book will help you to develop skills in data structures and algorithms, which technical interviewers look for in a candidate, by solving various problems based on these topics covering a wide range of concepts such as arrays, strings, maps, linked lists, sorting, and searching. You'll find out how to approach a coding interview problem in a structured way that produces faster results. Toward the final chapters, you'll learn to solve tricky questions about concurrency, functional programming, and system scalability. By the end of this book, you'll have learned how to solve Java coding problems commonly used in interviews, and will have developed the confidence to secure your Java-centric dream job. What you will learnSolve the most popular Java coding problems efficientlyTackle challenging algorithms that will help you develop robust and fast logicPractice answering commonly asked non-technical interview questions that can make the difference between a pass and a failGet an overall picture of prospective employers' expectations from a Java developerSolve various concurrent programming, functional programming, and unit testing problemsWho this book is for This book is for students, programmers, and employees who want to be invited to and pass interviews given by top companies. The book assumes high school mathematics and basic programming knowledge.

Algorithmic Thinking

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Publisher : No Starch Press
ISBN 13 : 1718500815
Total Pages : 409 pages
Book Rating : 4.7/5 (185 download)

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Book Synopsis Algorithmic Thinking by : Daniel Zingaro

Download or read book Algorithmic Thinking written by Daniel Zingaro and published by No Starch Press. This book was released on 2020-12-15 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: A hands-on, problem-based introduction to building algorithms and data structures to solve problems with a computer. Algorithmic Thinking will teach you how to solve challenging programming problems and design your own algorithms. Daniel Zingaro, a master teacher, draws his examples from world-class programming competitions like USACO and IOI. You'll learn how to classify problems, choose data structures, and identify appropriate algorithms. You'll also learn how your choice of data structure, whether a hash table, heap, or tree, can affect runtime and speed up your algorithms; and how to adopt powerful strategies like recursion, dynamic programming, and binary search to solve challenging problems. Line-by-line breakdowns of the code will teach you how to use algorithms and data structures like: The breadth-first search algorithm to find the optimal way to play a board game or find the best way to translate a book Dijkstra's algorithm to determine how many mice can exit a maze or the number of fastest routes between two locations The union-find data structure to answer questions about connections in a social network or determine who are friends or enemies The heap data structure to determine the amount of money given away in a promotion The hash-table data structure to determine whether snowflakes are unique or identify compound words in a dictionary NOTE: Each problem in this book is available on a programming-judge website. You'll find the site's URL and problem ID in the description. What's better than a free correctness check?

7 days with Dynamic Programming

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Author :
Publisher : OpenGenus
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4./5 ( download)

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Book Synopsis 7 days with Dynamic Programming by : Aditya Chatterjee

Download or read book 7 days with Dynamic Programming written by Aditya Chatterjee and published by OpenGenus. This book was released on 2020-08-24 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Become Dynamic Programming Master in 7 days Do share your review with us. It will help us help you better. 👌 Dynamic Programming is one of the most important algorithmic domains and is equally challenging. With practice and correct way of thinking, you can master it easily. If a problem takes O(2^N) time to search a solution among possible solutions, Dynamic Programming has the potential to reduce it to O(N) or polynomial time thereby reducing the search space. We will attempt one problem every day in this week and analyze the problem deeply. Our schedule: • Day 1: Introduction + Longest Increasing Subsequence • Day 2: 2D version of Day 1 problems • Day 3: Dynamic Programming on Strings • Day 4: Modified version of Day 3 problems • Day 5: Dynamic Programming for String patterns (Longest Palindromic Substring) • Day 6: Modified version of Day 4 problems • Day 7: 2 conditions on 1 data point On following this routine sincerely, you will get a strong hold on Dynamic Programming and will be able to attempt interview and real-life problems easily. #7daysOfAlgo: a 7-day investment to Algorithmic mastery.

Mathematical Algorithms for the Day Before Your Coding Interview

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Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.6/5 (5 download)

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Book Synopsis Mathematical Algorithms for the Day Before Your Coding Interview by : Ue Kiao

Download or read book Mathematical Algorithms for the Day Before Your Coding Interview written by Ue Kiao and published by . This book was released on 2020-05-31 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical Algorithms are fundamentally important as several real-life problems can be modeled as a Mathematical problem. Solving such problems require mathematical insights.These problems are a fundamental part of Interviews as it illustrates the thinking process of the candidate clearly. By going through the problems in this book, you will be well prepared to tackle any Mathematical problem.Following are some of the problems we have explored which involve ideas to solve a wider range of problems.- Smallest number with multiplesThis is a unique problem where we learn key insights regarding Prime factorization, role of primes in multiples and much more.We improve the time complexity of this problem starting from O(N^3 * log N) to O(N * log N * log N) to O(N * log log N).- Largest palindromeIn this problem, we have reduced 810000 comparisons to 362 comparisons based on three deep insights. This is a dramatic improvement and demonstrates that even if time complexity cannot be improved, the performance can be improved significantly.- GCD of sub-partsThis problem brings up key insights involving GCD (a common and important topic) and in the process, we have explored several standard algorithms like Euclidean' s GCD Algorithm in the path of developing our custom algorithm for the given problem.- Next PermutationThis problem demonstrates a significant improvement from O(N^N x N x logN) time to O(N) time complexity. Moreover, it illustrates that improving time complexity does not necessarily mean increasing space complexity as it reduces space complexity from O(N^N) to O(1).This brings in idea of Greedy Algorithms to Mathematical Algorithm and in the process, we have explored several standard algorithms like Heap's Algorithm.With these problems and the thought process to solve them, you will be fully prepared.This book has been carefully prepared and reviewed by Top programmers and Algorithmic researchers and members of OpenGenus. We would like to thank Aditya Chatterjee and Ue Kiao for their expertise in this domain and reviews from professors at The University of Tokyo and Tokyo Institute of Technology.Read this book now and ace your upcoming coding interview. This is a must read for everyone preparing for Coding Interviews at top companies.Books in this series ("Day before coding Interview"): - Problems for the day before your coding interview- Greedy Algorithms for the day before your Coding Interview- Dynamic Programming for the day before your coding interview- String Algorithms for the day before your Coding Interview- Mathematical Algorithms for the day before your Coding Interview

The Recursive Book of Recursion

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Author :
Publisher : No Starch Press
ISBN 13 : 1718502036
Total Pages : 330 pages
Book Rating : 4.7/5 (185 download)

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Book Synopsis The Recursive Book of Recursion by : Al Sweigart

Download or read book The Recursive Book of Recursion written by Al Sweigart and published by No Starch Press. This book was released on 2022-08-16 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: An accessible yet rigorous crash course on recursive programming using Python and JavaScript examples. Recursion has an intimidating reputation: it’s considered to be an advanced computer science topic frequently brought up in coding interviews. But there’s nothing magical about recursion. The Recursive Book of Recursion uses Python and JavaScript examples to teach the basics of recursion, exposing the ways that it’s often poorly taught and clarifying the fundamental principles of all recursive algorithms. You’ll learn when to use recursive functions (and, most importantly, when not to use them), how to implement the classic recursive algorithms often brought up in job interviews, and how recursive techniques can help solve countless problems involving tree traversal, combinatorics, and other tricky topics. This project-based guide contains complete, runnable programs to help you learn: How recursive functions make use of the call stack, a critical data structure almost never discussed in lessons on recursion How the head-tail and “leap of faith” techniques can simplify writing recursive functions How to use recursion to write custom search scripts for your filesystem, draw fractal art, create mazes, and more How optimization and memoization make recursive algorithms more efficient Al Sweigart has built a career explaining programming concepts in a fun, approachable manner. If you’ve shied away from learning recursion but want to add this technique to your programming toolkit, or if you’re racing to prepare for your next job interview, this book is for you.