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R Data Structures and Algorithms

R Data Structures and Algorithms

By : PKS Prakash, Sri Krishna Rao
4.5 (2)
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R Data Structures and Algorithms

R Data Structures and Algorithms

4.5 (2)
By: PKS Prakash, Sri Krishna Rao

Overview of this book

In this book, we cover not only classical data structures, but also functional data structures. We begin by answering the fundamental question: why data structures? We then move on to cover the relationship between data structures and algorithms, followed by an analysis and evaluation of algorithms. We introduce the fundamentals of data structures, such as lists, stacks, queues, and dictionaries, using real-world examples. We also cover topics such as indexing, sorting, and searching in depth. Later on, you will be exposed to advanced topics such as graph data structures, dynamic programming, and randomized algorithms. You will come to appreciate the intricacies of high performance and scalable programming using R. We also cover special R data structures such as vectors, data frames, and atomic vectors. With this easy-to-read book, you will be able to understand the power of linked lists, double linked lists, and circular linked lists. We will also explore the application of binary search and will go in depth into sorting algorithms such as bubble sort, selection sort, insertion sort, and merge sort.
Table of Contents (11 chapters)
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Chapter 1. Getting Started

Faster and efficient information retrieval is the primary objective of most computer programs. Data structures and algorithms help us in achieving the objective by processing and retrieving data faster. Information retrieval can easily be integrated with algorithms to answer inferential questions from data such as:

  • How are sales increasing over time?
  • What is customer's arrival distribution over time?
  • Out of all the customers who visit between 3:00 and 6:00 PM, how many order Asian versus Chinese?
  • Of all the customers visiting, how many are from the same city?

In the efficient processing of the preceding queries, especially in big data scenarios, data structures and algorithms utilized for data retrieval play a significant role. This book will introduce primary data structures such as lists, queues, and stacks, which are used for information retrieval and trade-off of different data structures. We will also introduce the data structure and algorithms evaluation approach for retrieval and processing of defined data structures.

Algorithms are evaluated based on complexity and efficiency, where complexity refers to an algorithm design which is easy to program and debug, and efficacy ensures that the algorithm is utilizing computer resources optimally. This book will focus on the efficiency part of algorithms using data structures, and the current chapter introduces the importance of data structure and the algorithms used for retrieval of data from data structures.

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