Randomized selection with quintary partitions
نویسنده
چکیده
We show that several versions of Floyd and Rivest’s algorithm Select for finding the kth smallest of n elements require at most n+min{k, n− k}+ o(n) comparisons on average and with high probability. This rectifies the analysis of Floyd and Rivest, and extends it to the case of nondistinct elements. Our computational results confirm that Select may be the best algorithm in practice.
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ورودعنوان ژورنال:
- CoRR
دوره cs.DS/0312055 شماره
صفحات -
تاریخ انتشار 2003