Dynamic Programming For Coding

DYNAMIC PROGRAMMING FOR CODING PDF Book Details:
Author: Meenakshi
Publisher: Notion Press
ISBN: 9781946556691
Size: 18.10 MB
Format: PDF, ePub, Docs
Category : Computers
Languages : un
Pages : 144
View: 5534

Get Book


Dynamic Programming For Coding PDF

by Meenakshi, Dynamic Programming For Coding Books available in PDF, EPUB, Mobi Format. Download Dynamic Programming For Coding books, 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.


Dynamic Programming For Coding Interviews

Dynamic Programming for Coding Interviews PDF Book Details:
Author: Meenakshi
Publisher: Notion Press
ISBN: 194655670X
Size: 40.51 MB
Format: PDF, ePub, Docs
Category : Computers
Languages : un
Pages : 142
View: 826

Get Book


Dynamic Programming For Coding Interviews PDF

by Meenakshi, Dynamic Programming For Coding Interviews Books available in PDF, EPUB, Mobi Format. Download Dynamic Programming For Coding Interviews books, 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.


Dynamic Programming For The Day Before Your Coding Interview

Dynamic Programming for the Day Before Your Coding Interview PDF Book Details:
Author: Ue Kiao
Publisher:
ISBN:
Size: 73.43 MB
Format: PDF, Mobi
Category :
Languages : un
Pages : 52
View: 567

Get Book


Dynamic Programming For The Day Before Your Coding Interview PDF

by Ue Kiao, Dynamic Programming For The Day Before Your Coding Interview Books available in PDF, EPUB, Mobi Format. Download Dynamic Programming For The Day Before Your Coding Interview books, 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.


String Algorithms For The Day Before Your Coding Interview

String Algorithms for the Day Before Your Coding Interview PDF Book Details:
Author: Ue Kiao
Publisher:
ISBN:
Size: 35.20 MB
Format: PDF, Kindle
Category :
Languages : un
Pages : 40
View: 3408

Get Book


String Algorithms For The Day Before Your Coding Interview PDF

by Ue Kiao, String Algorithms For The Day Before Your Coding Interview Books available in PDF, EPUB, Mobi Format. Download String Algorithms For The Day Before Your Coding Interview books, Strings are fundamental data type in real world and developing algorithms to deal with it is an important domain. In interviews, often, string algorithms are most insightful and challenging.In this guide for the day before your coding interview, we have explored some problems and demonstrated the thought process to solve it starting from the brute force solutions. In the process, we have covered all fundamental ideas along with applying Dynamic Programming to String algorithms so that you are able to solve all string-based problems. Some of the problems we have covered are: - Check substring: This is an important fundamental problem where we learn how strings can be handled just like numeric data and algorithms for numeric data can be leveraged.Some of the core concepts we explored are string hashing, rolling hash and much more.- Longest common substring: This is a core problem as this uses the concepts we gained in the previous problems and an alternative solution is to use Dynamic Programming.The core idea is to apply Dynamic Programming over two different string data.- Longest repeating substring: In line with our previous problem, we explored how to apply Dynamic Programming for this problem. The key distinction is that we are dealing with just 1 string instead of 2 strings as in the previous problem. Unlike the previous problem, the Dynamic Programming approach is the only optimal solution.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


Graph Algorithms For The Day Before Your Coding Interview

Graph Algorithms for the Day Before Your Coding Interview PDF Book Details:
Author: Ue Kiao
Publisher:
ISBN:
Size: 15.80 MB
Format: PDF, Docs
Category :
Languages : un
Pages : 46
View: 1694

Get Book


Graph Algorithms For The Day Before Your Coding Interview PDF

by Ue Kiao, Graph Algorithms For The Day Before Your Coding Interview Books available in PDF, EPUB, Mobi Format. Download Graph Algorithms For The Day Before Your Coding Interview books, Graph Algorithms are fundamentally important and different than other Algorithmic domains as it gives an inherent structure to the data and we operate on it. This is one of the most important domains for Coding Interviews focused on problem solving.Following are some of the problems we have explored which involve ideas to solve a wider range of problems: - All paths between two verticesThis is a fundamental problem as modifications to it results in solving a wide range of problems. In the process of formulating a solution, we have explored core ideas like graph traversal techniques like Depth First Search and Graph representation like Adjacency List.- Mother VertexThis is an important problem as it highlights two key ideas of Graph problems that is connectivity and importance of specific vertices.We have solved this problem using two approaches where the efficient approach is a modification of Depth First Search and takes O(V^2) time complexity.- Paths with K edgesThis is an important problem as it demonstrates how we can utilize ideas from Dynamic Programming and Divide and Conquer to solve Graph Problems.We have demonstrated four approaches where the brute force approach takes O(2^V x V) time, improving it with a structure we get to O(V^K) time, further applying Dynamic Programming to it, we get to O(V^3 * K) time and finally, using Divide and Conquer to optimize calculation, we arrive at O(V^3 * logK) time.This is a perfect Graph Algorithm problem.We have covered more variants of the problems and ideas in our conclusion to give a bigger picture and better equip you to solve any problem.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- Graph Algorithms for the day before your Coding Interview


Algorithmen In C

Algorithmen in C PDF Book Details:
Author: Robert Sedgewick
Publisher: Pearson Deutschland GmbH
ISBN: 9783893193769
Size: 66.87 MB
Format: PDF, ePub
Category : Algorithmus
Languages : de
Pages : 742
View: 4837

Get Book


Algorithmen In C PDF

by Robert Sedgewick, Algorithmen In C Books available in PDF, EPUB, Mobi Format. Download Algorithmen In C books,


Perlen Der Programmierkunst

Perlen der Programmierkunst  PDF Book Details:
Author: Jon Louis Bentley
Publisher:
ISBN: 9783827317193
Size: 35.50 MB
Format: PDF
Category :
Languages : en
Pages : 285
View: 3139

Get Book


Perlen Der Programmierkunst PDF

by Jon Louis Bentley, Perlen Der Programmierkunst Books available in PDF, EPUB, Mobi Format. Download Perlen Der Programmierkunst books,


Problems For The Day Before Your Coding Interview

Problems for the day before your coding interview PDF Book Details:
Author: Aditya Chatterjee
Publisher: OpenGenus
ISBN:
Size: 80.84 MB
Format: PDF, ePub, Mobi
Category : Computers
Languages : un
Pages : 52
View: 7682

Get Book


Problems For The Day Before Your Coding Interview PDF

by Aditya Chatterjee, Problems For The Day Before Your Coding Interview Books available in PDF, EPUB, Mobi Format. Download Problems For The Day Before Your Coding Interview books, If you have an upcoming coding interview, this is a must for you to read this book 💪 and get prepared to tackle ALGORITHM and DATA STRUCTURE problems in a day. In this book, we have solved insightful algorithmic problems and discussed some of the best insights to drive you into the problem solving mindset. Being in a mindset required for an upcoming event is like winning half the battle. In this book, we begin with an easy problem and go on to explore some tough and insightful problems. The first problem we presented is to delete minimum number of digits in a number to make it a perfect square. This might seem to be a simple problem but the insights involved in solving this is widely applicable across various Algorithmic problems. This problem is solved in time complexity of O(N ^ (1/3) x logN x logN) (think how?) Moreover, in solving the above problem, we have learnt how to generate all combinations/ subsets of a set efficiently. In this line, we have covered other ideas related to combination and permutation generation in other problems in this book. Some of the ideas we covered in the other problems are: * Augmented data structures: How modifying a data structure can improve the complexity greatly. * How a single data structure can have multiple states? and algorithms to interchange them * Concepts related to string comparison and searching (MUST READ + VERY IMPORTANT) * Basic insightful ideas in Number theory and solved a couple of problems related to it * Understanding how number of operations can be reduced greatly without impacting time complexity. * Insightful understanding and analysis of Heap's algorithm for permutation generation (VERY IMPORTANT + RARE) * These problems have covered domains like Graph Theory, Dynamic Programming, Greedy Algorithms, Number Theory, Divide and Conquer and much more. In short, we have carefully chosen the problems to give you idea of: * Basic yet widely asked concepts like combination and permutation generation, forming Dynamic Programming solutions, applying greedy algorithms * Doing a detailed complexity analysis * Proceed in solving the problem in steps and understand deeply why the solution works This book has been 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 Tokyo Institute of Technology. Read this book now and ace your upcoming coding interview 💪 If you have a doubt regarding some algorithmic problem or want some addition/ modification to this book, feel free to get in touch with us or leave a review comment 😃


Datenstrukturen Und Algorithmen

Datenstrukturen und Algorithmen PDF Book Details:
Author: Ralf Hartmut Güting
Publisher: Springer-Verlag
ISBN: 3658046767
Size: 13.90 MB
Format: PDF, Mobi
Category : Computers
Languages : de
Pages : 393
View: 5244

Get Book


Datenstrukturen Und Algorithmen PDF

by Ralf Hartmut Güting, Datenstrukturen Und Algorithmen Books available in PDF, EPUB, Mobi Format. Download Datenstrukturen Und Algorithmen books, Effiziente Algorithmen und Datenstrukturen sind ein zentrales Thema der Informatik. Beide Themen sind untrennbar miteinander verknüpft, denn Algorithmen arbeiten auf Datenstrukturen und Datenstrukturen enthalten wiederum Algorithmen als Komponenten. Dieses Buch vermittelt grundlegende Lösungsverfahren zu den wichtigsten Problembereichen bei der Arbeit mit Datenstrukturen und Algorithmen. Leser lernen neue Algorithmen zu entwerfen und ihre Kosten in Bezug auf Laufzeit und Speicherplatz zu analysieren. Die Autoren führen in programmiersprachliche Konzepte für Datenstrukturen ein und erläutern Datentypen, die die Bausteine für die Implementierung komplexer Algorithmen und Datenstrukturen bilden. Neben der Darstellung von Sortieralgorithmen und Graphen setzt das Buch mit Kapiteln zu geometrischen Algorithmen und Techniken zur Kürzeste-Wege-Suche mittels Kontraktionshierarchien einige besondere Schwerpunkte. Jedes Kapitel schließt mit Aufgaben und Literaturhinweisen für alle, die die Thematik vertiefen wollen. Alle Programmbeispiele in dem Buch sind in Java formuliert. Grundlage des Buchs sind Veranstaltungen zu Datenstrukturen und zu geometrischen Algorithmen, die Ralf Hartmut Güting seit vielen Jahren an der Fernuniversität Hagen anbietet. Der Stoff umfasst eine einsemestrige vierstündige Vorlesung. Für die Neuauflage wurde das Lehrbuch erweitert und aktualisiert. Es richtet sich an Softwareentwickler und dient als Lehrbuch im Studiengang Informatik.


C In 7 Days For Coding Interviews

C IN 7 DAYS for CODING INTERVIEWS PDF Book Details:
Author: Meenakshi, Kamal Rawat
Publisher: Notion Press
ISBN: 1948096609
Size: 32.11 MB
Format: PDF, ePub, Mobi
Category : Education
Languages : en
Pages : 232
View: 2988

Get Book


C In 7 Days For Coding Interviews PDF

by Meenakshi, Kamal Rawat, C In 7 Days For Coding Interviews Books available in PDF, EPUB, Mobi Format. Download C In 7 Days For Coding Interviews books, In my career spanning more than a decade, I have used C language in only two projects. All these years, I had either coded in C++, Java or C#. However, during interviews, I had always coded my solutions in C. When an interviewer asks you to implement a Stack having one extra operation, getMinimum that returns minimum element in current stack, you are expected to give your own implementation of stack from scratch and not use Stack class in Java library. C language allows your solution to be focused on the problem without unnecessary clutter of class and object definitions. Java and C# are good to showcase your design skills, but if the question is not explicitly about object-oriented design, C (or C++) provides flexibility to demonstrate your memory management skills and help implement everything required using data structure and algorithms. C is a lightweight language and is easy to learn in a short span of time. Understanding the internals of C helps comprehend other high-level languages better because nthe concepts and terminology remain the same. This book gives you an insight into the journey that your code goes through and best practices at each stage.