He received the Turing Award--the most prestigious award in the field--jointly with Robert Tarjan in 1986. The citation states that he received the award "for fundamental achievements in the design and analysis of algorithms and data structures."
In addition to his research work, he is well known for his book on formal languages coauthored with J.D. Ullman and A.V. Aho, regarded as the classic text in the field.
taringapuntonet: Estructuras de Datos y Algoritmos (0 puntos): Estructuras de Datos y Algoritmos
Alfred V. Aho, John E. Hopcroft|Pdf... http://bit.ly/7BKrG5