def partition(a, i, j): k = -1 while True: while k * (a[i] - a[j]) >= 0: if i == j: return i j += k a[i], a[j] = a[j], a[i] i, j, k = j, i - k, -k def qsort(a, i, j): if i < j: k = partition(a, i, j) qsort(a, i, k - 1) qsort(a, k + 1, j) def quickSort(a): qsort(a, 0, len(a) - 1) if __name__ == ‘__main__‘: from random import shuffle data = range(100) shuffle(data) print ‘before:\n‘, data quickSort(data) print ‘after:\n‘, data
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[硕.Love Python] QuickSort(快速排序)
原文地址:http://liushuo777.blog.51cto.com/10091950/1896235