C. XAVIER teaches in the Department of Computer Science at St. Xavier College in Palayamkottai, India. He has published numerous papers on parallel algorithms and more than ten computer science textbooks. S. S. IYENGAR is Professor and Chairman of the Department of Computer Science at Louisiana State University. He has published several books and more than 220 papers on high-performance algorithms and data structures and has headed research projects for such organizations as the Office of Naval Research, the National Aeronautics and Space Administration, the National Science Foundation, a...