19 lines
406 B
Python
19 lines
406 B
Python
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def rot_right(a):
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return zip(*a[::-1])
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def sp(m, n, start = 0):
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""" Generate number range spiral of dimensions m x n
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"""
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if n == 0:
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yield ()
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else:
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yield tuple(range(start, m + start))
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for row in rot_right(list(sp(n - 1, m, m + start))):
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yield row
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def spiral(m):
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return sp(m, m)
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for row in spiral(5):
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print(''.join('%3i' % i for i in row))
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