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16 lines
332 B
Nim
16 lines
332 B
Nim
# the Ackermann function
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proc ack(x, y: int): int =
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if x != 0:
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if y != 0:
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return ack(x-1, ack(x, y-1))
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return ack(x-1, 1)
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else:
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return y + 1
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# if x == 0: return y + 1
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# elif y == 0: return ack(x-1, 1)
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# else: return ack(x-1, ack(x, y-1))
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# echo(ack(0, 0))
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write(stdout, ack(3, 4)) #OUT 125
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