Quicksort是一个很好的排序算法,但是其最坏情况运行时间是O(n^2), 还不如Mergesort的O(nlgn),如何改进Quicksort? 引进随机化思想一种方法: 对给定的待排序序列,随机地重排列另一种方法:随机选取pivot给出第二种方法的代码1/** 2 * 2010.1.24 3 * 随机快速排序法 4 * pivot元素并不是
Most experiments used textbook examples, such as Quicksort (used by Weissman, experiments 1 and 2 in Table 1) or Hangman (used by Kesler et al., experiment 10 in Table 1). The reason why we think that such examples are problematic for experiments is that they imply some algorithmic diffic...