Abstract
A parallel algorithm for generating all combinations ofm out ofn items in lexicographic order is presented. The algorithm usesm processors and runs inO(nCm) time. The cost of the algorithm, which is the parallel running time multiplied by the number of processors used, is optimal to within a constant multiplicative factor in view of the Ω(ncm*m) lower bound on the number of operations required to solve this problem using a sequential computer.
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