It gives me immense pleasure in presenting the first edition of the book-Principles of DATA STRUCTURES Using C and C++ which is a unique text valuable for professionals that covers both theoretical and practical aspects of the data structures.

The study of data structures is an essential subject of every under graduate and graduate programs related to computer science. A thorough understanding of the basics of this subject is inevitable for efficient programming. This book covers all the fundamental topics to give a better understanding about the subject. This book is written in accordance with the revised syllabus for BTech/BE (both Computer Science and Electronics branches) and MCA students of Kerala University, MG University, Calicut University, CUSAT Cochin (deemed) University, NIT Calicut (deemed) University, Anna University, UP Technical University, Amritha Viswa (deemed) Vidyapeeth, Karunya (deemed) University, Pune University, Bangalore University and Rajasthan Vidyapeeth (deemed) University. Moreover this book covers almost all the topics of the other Indian and International Universities where this subject is there in their under graduate and graduate programs.

While writing the book, I have always considered the examination requirements of the students and various difficulties and troubles, which they face, while studying the subject.

All effort is made to cover the topics in the simplest possible way without loosing its qualities. Almost five hundred questions from various university question papers have been included in this book. In short, I earnestly hope that the book will earn the appreciation of the teachers and students alike.

Although I have tried to check mistakes and misprints, yet it is difficult to claim perfection. Any suggestions for the improvement of any topics, when brought to my notice, will be thankfully acknowledged and will be incorporated in the next edition.