Charles Antony Richard Hoare

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Tony Hoare at the 2005 VMCAI conference
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Tony Hoare at the 2005 VMCAI conference

Sir Charles Antony Richard Hoare (Tony Hoare or C.A.R. Hoare, born January 11, 1934) is an English computer scientist. He is probably best known for the development of Quicksort. Quicksort is the world's most widely used sorting algorithm. He also developed Hoare logic.

Hoare was born in Colombo, in Sri Lanka. He received his Bachelor's degree in Classics from the University of Oxford in 1956. He stayed in Oxford for an extra year studying graduate-level statistics. Following his National Service in the Royal Navy (1956–1958), he studied computer translation of human languages at Moscow State University in the Soviet Union in the school of Andrey Nikolayevich Kolmogorov.