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holmescn

½ð³æ (ÕýʽдÊÖ)

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holmescn

½ð³æ (ÕýʽдÊÖ)

ÌùÉÏPython ´úÂ룺
CODE:
n = 1000
a = 1
b = 1
index = 1
while len(str(a)) < n:
  a, b = b, a+b
  index += 1
print index

´ð°¸:
ÒýÓûØÌû:
4782

[ Last edited by holmescn on 2011-7-16 at 10:14 ]
2Â¥2011-06-11 09:57:41
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

libralibra

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

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jjdg(½ð±Ò+1): ¸Ðл²ÎÓë 2011-06-11 22:52:19
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3Â¥2011-06-11 15:23:22
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

qinghuoly

ľ³æ (ÕýʽдÊÖ)

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xzhdty(½ð±Ò+2): лл²ÎÓë 2011-06-27 10:08:30
schemeÓïÑԽⷨ£º
CODE:
[define [ans25]
[let f ([x 1] [y 1] [n 2])
  [if [= [order-of-magnitude y] 999]
      n
      [f y [+ x y] [add1 n]]]]]

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cpu time: 1421 real time: 1422 gc time: 950
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