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30 lines
748 B
Python
30 lines
748 B
Python
"""Find the sum of all numbers less than one million, which are palindromic in base 10 and base 2.
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The decimal number, 585 = 10010010012 (binary), is palindromic in both bases.
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Find the sum of all numbers, less than one million, which are palindromic in base 10 and base 2.
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(Please note that the palindromic number, in either base, may not include leading zeros.)
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"""
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MAX = 1000000
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def binary(n):
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return '{0:b}'.format(n)
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def main():
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total = 0
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i = 0
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while i < MAX:
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i = i + 1
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n = str(i)
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if n != n[::-1]:
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continue
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b = binary(i)
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if b != b[::-1]:
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continue
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print n, b
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total = total + i
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print 'Total:', total
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if __name__ == '__main__':
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main()
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