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30 lines
525 B
Python
30 lines
525 B
Python
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def quicksort(A, p, r):
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if p < r:
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q = partition(A, p, r)
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quicksort(A, p, q - 1)
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quicksort(A, q + 1, r)
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def partition(A, p, r):
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x = A[r]
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i = p - 1
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for j in range(p, r):
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if A[j] <= x:
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i += 1
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tmp = A[i]
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A[i] = A[j]
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A[j] = tmp
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tmp = A[i+1]
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A[i+1] = A[r]
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A[r] = tmp
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return i + 1
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if __name__ == "__main__":
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A = [8, 4, 5, 7, 1, 2, 3, 6]
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# partition(A, 0, 7)
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print(A)
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quicksort(A, 0, 7)
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print(A)
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