This book constitutes the refereed proceedings of the 9th International Workshop on Algorithms and Data Structures, WADS 2005, held in Waterloo, Canada, in August 2005.
The 37 revised full papers presented were carefully reviewed and selected from 90 submissions. A broad variety of topics in algorithmics and data structures is addressed including searching and sorting, approximation, graph and network computations, computational geometry, randomization, communications, combinatorial optimization, scheduling, routing, navigation, coding, and pattern matching.