32 lines
913 B
Python
32 lines
913 B
Python
#!/usr/bin/env python
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from random import randint
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def bitonic_sort(up, x):
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if len(x) <= 1:
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return x
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else:
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half = int(len(x) / 2)
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first = bitonic_sort(True, x[:half])
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second = bitonic_sort(False, x[half:])
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return bitonic_merge(up, first + second)
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def bitonic_merge(up, x):
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# assume input x is bitonic, and sorted list is returned
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if len(x) == 1:
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return x
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else:
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bitonic_compare(up, x)
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half = int(len(x) / 2)
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first = bitonic_merge(up, x[:half])
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second = bitonic_merge(up, x[half:])
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return first + second
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def bitonic_compare(up, x):
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dist = int(len(x) / 2)
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for i in range(dist):
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if (x[i] > x[i + dist]) == up:
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x[i], x[i + dist] = x[i + dist], x[i] #swap
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if __name__ == '__main__':
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sorted_array = bitonic_sort(True, [randint(1,1000) for i in range(16)])
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print(sorted_array)
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