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holmescn

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[ Last edited by holmescn on 2011-5-12 at 15:08 ]
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ll20100996

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΢³¾¡¢ÃÎÏë(½ð±Ò+2): лл²ÎÓ룡 2011-05-09 17:54:56
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5Â¥2011-05-09 14:11:04
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ÓàÔó³É(½ð±Ò+3, ³ÌÐòÇ¿Ìû+1): ¹ÄÀø½»Á÷£¡ÒÔǰµÄ²¹ÉÏ£¡ 2011-06-04 19:26:38
#include "stdio.h"
void main(void)
{
    int i=1,j=1,n=0;
    for(;i<4000000&&j<4000000; )
    {
         i+=j;
         if(i%2==0) n+=i;
         j+=i;
         if(j%2==0) n+=j;
    }
    printf("%d\n",n);
}
½á¹û£º4613732
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[ Last edited by ΢³¾¡¢ÃÎÏë on 2011-5-8 at 18:24 ]
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2Â¥2011-05-08 18:23:35
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

libralibra

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

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Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
΢³¾¡¢ÃÎÏë(½ð±Ò+2): лл²ÎÓ룡 2011-05-09 17:54:20
¸úÂ¥Éϳ¬¼¶ÏñµÄ´úÂë
matlab µÄ
CODE:
a = 1;
b = 2;
n = 2
tic;
while (a<4000000 && b<4000000)
   a = a+b;
   if mod(a,2)==0
       n = n+a;
   end
   b = a+b;
   if mod(b,2)==0
       n = n+b;
   end
end
toc;
n

½á¹û¼°ÔËÐÐʱ¼ä
CODE:
Elapsed time is 0.000008 seconds.
n =
     4613732

matlab/VB/python/c++/Javaд³ÌÐòÇë·¢QQÓʼþ:790404545@qq.com
3Â¥2011-05-09 01:28:12
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

xioooli

½ð³æ (СÓÐÃûÆø)

¡ï ¡ï ¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
΢³¾¡¢ÃÎÏë(½ð±Ò+2): лл²ÎÓ룡 2011-05-09 17:54:36
python
CODE:
def Fibonacci(n):
    a,b = 1,2
    while a < n:
        yield a
        a,b = b,a+b

print sum([i for i in Fibonacci(4000000) if i%2==0])

bash
CODE:
n1=1
n2=2
fib=2
result=0
while [ $fib -lt 4000000 ]; do
        if [ "$(($fib%2))" = 0 ]; then
                echo $fib
                result=$(($result+$fib))
        fi
        fib=$(($n1+n2))
        n1=$n2
        n2=$fib
done
echo result = $result

4Â¥2011-05-09 14:05:43
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