Sir Charles Antony Richard Hoare, commonly known as Tony Hoare or C. A. R. Hoare, is a British computer scientist best known for the development (in 1960, at age 26) of Quicksort, one of the world’s most widely used sorting algorithms. He also developed Hoare logic for verifying program correctness, and the formal language Communicating Sequential Processes (CSP) to specify the interactions of concurrent processes (including the dining philosophers problem) and the inspiration for the occam programming language. Hoare’s most significant work has been in the following areas: his sorting algorithm (Quicksort), Hoare logic, the formal language Communicating Sequential Processes (CSP) used to specify the interactions between concurrent processes, structuring computer operating systems using the monitor concept, and the axiomatic specification of programming languages. In 1982, he was elected a Fellow of the Royal Society.
