17 lines
356 B
Python
17 lines
356 B
Python
COLS = 9
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def CX(x, ran):
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while True:
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x += 2 * next(ran)
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yield x
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x += 1
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yield x
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ran = []
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d = -1
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for V in CX(1,iter(list(range(0,COLS,2)) + list(range(COLS-1-COLS%2,0,-2)))):
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ran.append(iter(range(V, V+COLS*d, d)))
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d *= -1
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for x in range(0,COLS):
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for y in range(x, x+COLS):
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print(repr(next(ran[y])).rjust(3), end = ' ')
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print()
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