Elliot Koffman is a professor of computer and information science at Temple University. He is one of the country's foremost CS educators, a former chairman of the ACM Task Force for introductory programming methods courses, and the co-author of Problem Solving, Abstraction, and Design, Problem Solving and Program Design in C, (both with Pearson) Objects, Abstraction, Data Structures and Design Using C++, and Objects, Abstraction, Data Structures and Design Using Java Version 5.0 (both with John Wiley & Sons).
Dr. Frank L. Friedman is Professor and Chairman of Computer and Information Science at Temple University. He received M.S. degrees from Johns Hopkins University and Purdue University and his Ph.D. in Computer Science from Purdue University. Dr. Friedman is the co-author of Problem Solving, Abstraction, and Design Using C++ and other textbooks on programming in Fortran and Basic. His current research and instructional interests are in software engineering, specifically object-oriented paradigms for software design.