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Dr. Turing’s Automatic Machine

14th May 2015

Alan Turing published a ground-breaking paper in 1936, On computable numbers, with an application to the Entscheidungsproblem (PDF). It was about an esoteric problem in mathematics, for which he needed a theoretical model of how a mathematician computes with pencil & paper. He called this model an automatic machine; we now call it a Turing Machine, which […]

Binary Search

27th April 2015

Binary Search is one of the most fundamental computer algorithms. Given an ordered list of some data (names, numbers, …) find out if it contains a particular item. For example, consider the list: 2, 4, 5, 7, 8, 11, 12. If we ask if it contains the number 5, the algorithm should return 2 (counting […]