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Formulation and analysis of in-place MSD radix sort algorithms

By Nasir Al-darwish


We present a unified treatment of a number of related inplace MSD radix sort algorithms with varying radices, collectively referred to here as ‘Matesort ’ algorithms. These algorithms use the idea of in-place partitioning which is a considerable improvement over the traditional linked list implementation of radix sort that uses O(n) space. The binary Matesort algorithm is a recast of the classical radixexchange sort, emphasizing the role of in-place partitioning and efficient implementation of bit processing operations. This algorithm is O(k) space and has O(kn) worst-case order of running time, where k is the number of bits needed to encode an element value and n is the number of elements to be sorted. The binary Matesort algorithm is evolved into a number of other algorithms including ‘continuous Matesort’ for handling floating point numbers, and a number o

Year: 2005
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