40 lines
726 B
Python
40 lines
726 B
Python
#!/usr/bin/python3
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from timeit import default_timer
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def is_palindrome(num, base):
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reverse = 0
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tmp = num
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while tmp > 0:
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reverse = reverse * base
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reverse = reverse + tmp % base
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tmp = int(tmp / base)
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if num == reverse:
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return 1
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return 0
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def main():
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start = default_timer()
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max_ = 0
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for i in range(999, 99, -1):
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for j in range(i, 99, -1):
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num = i * j
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if num > max_ and is_palindrome(num, 10):
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max_ = num
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end = default_timer()
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print('Project Euler, Problem 4')
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print('Answer: {}'.format(max_))
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print('Elapsed time: {:.9f} seconds'.format(end - start))
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if __name__ == '__main__':
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main()
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