This book is a set of useful common algorithms that are quite common in various application areas using computers. The book is intended for use as a reference or as an appendix to a standard programming tutorial. It facilitates the transition from introductory programming to the formal study of algorithms. The emphasis is not on any programming language constructs, but rather on data structures and those algorithms that can be implemented using the structures in question. Therefore, there are more software implementations of algorithms in the book than in any programming textbook. This reflects the fact that the number of constructions provided by the programming language is limited, but the number of algorithms is not.