37 lines
941 B
Python
37 lines
941 B
Python
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def is_concatenated_product_9_pandigital(n):
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validation_array = [0 for _ in range(9)]
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result = ""
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total_length = 0
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for i in range(1, 10):
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current_product = str(i * n)
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for d in current_product:
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if d == "0":
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return False
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index = ord(d) - 49
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validation_array[index] += 1
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if validation_array[index] > 1:
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return False
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total_length += len(current_product)
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result += current_product
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if total_length == 9:
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return result
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if total_length > 9:
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return False
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raise Exception("We should not get here.")
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def euler_038():
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r = []
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for i in range(10000):
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p = is_concatenated_product_9_pandigital(i)
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if p:
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r.append(int(p))
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return max(r)
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if __name__ == "__main__":
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print("e038.py: " + str(euler_038()))
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assert(euler_038() == 932718654)
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