Binary GCD algorithm - Wikipedia
Visualisation of using the binary GCD algorithm to find the greatest common divisor (GCD) of 36 and 24. Thus, the GCD is 22 × 3 = 12. The binary GCD algorithm, also known as Stein's algorithm or the binary Euclidean algorithm,[1][2] is an algorithm that computes the greatest common divisor (GCD) of two nonnegative integers. Stein's algorithm uses simpler arithmetic operations than the conventional
Nearly Optimal Sparse Fourier Transform
arXiv:1201.2501v1[cs.DS]12Jan2012 Nearly Optimal Sparse Fourier Transform Haitham Hassanieh MIT Piotr Indyk MIT Dina Katabi MIT Eric Price MIT {haithamh,indyk,dk,ecprice}@mit.edu Abstract We consider the problem of computing the k-sparse approximation to the discrete Fourier transform of an n-dimensional signal. We show: • An O(k log n)-time algorithm for the case where the input signal has at mo
God's Number is 20
R L U2 F U' D F2 R2 B2 L U2 F' B' U R2 D F2 U R2 U Superflip, the first position proven to require 20 moves. New results: God's Number is 26 in the quarter turn metric! Every position of Rubik's Cube™ can be solved in twenty moves or less. With about 35 CPU-years of idle computer time donated by Google, a team of researchers has essentially solved every position of the Rubik's Cube™, and shown tha
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An algorithm for the machine calculation of complex Fourier series - Mathematics of Computation
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