无心人 发表于 2008-7-22 18:24:27

Input x value(0 to EXIT):4
m(total) = 9, n(odd) = 8
Input x value(0 to EXIT):4
m(total) = 16, n(odd) = 11
Input x value(0 to EXIT):4
m(total) = 16, n(odd) = 12
Input x value(0 to EXIT):0

无心人 发表于 2008-7-22 18:25:23

:*-^

弄反了
呵呵

无心人 发表于 2008-7-22 18:26:51

如果每次以均等概率向前走x的距离或者向后走1的距离(x>1),那么最后能够返回起始位置(或之前)的概率是多少?

你的叙述有问题啊
我怎么看都是进四退一

无心人 发表于 2008-7-22 18:39:01

进一退四统计，100亿步一次

Input x value(0 to EXIT):4
m(total) = 48117920, n(odd) = 15840711
Input x value(0 to EXIT):4
m(total) = 48117253, n(odd) = 15838770
Input x value(0 to EXIT):4
m(total) = 48122812, n(odd) = 15840396
Input x value(0 to EXIT):4
m(total) = 48124744, n(odd) = 15846027
Input x value(0 to EXIT):4
m(total) = 48110844, n(odd) = 15840923
Input x value(0 to EXIT):6
m(total) = 49584614, n(odd) = 16482942
Input x value(0 to EXIT):6
m(total) = 49589706, n(odd) = 16482016
Input x value(0 to EXIT):6
m(total) = 49586066, n(odd) = 16490295
Input x value(0 to EXIT):6
m(total) = 49591330, n(odd) = 16480975
Input x value(0 to EXIT):6
m(total) = 49595902, n(odd) = 16488322
Input x value(0 to EXIT):2
m(total) = 38202180, n(odd) = 11793733
Input x value(0 to EXIT):2
m(total) = 38175144, n(odd) = 11793327
Input x value(0 to EXIT):2
m(total) = 38206908, n(odd) = 11807184
Input x value(0 to EXIT):2
m(total) = 38188778, n(odd) = 11802628
Input x value(0 to EXIT):2
m(total) = 38182240, n(odd) = 11798944
Input x value(0 to EXIT):3
m(total) = 45636711, n(odd) = 29560213
Input x value(0 to EXIT):3
m(total) = 45629128, n(odd) = 29558530
Input x value(0 to EXIT):3
m(total) = 45634767, n(odd) = 29558059
Input x value(0 to EXIT):3
m(total) = 45635516, n(odd) = 29561502
Input x value(0 to EXIT):3
m(total) = 45626236, n(odd) = 29554450
Input x value(0 to EXIT):5
m(total) = 49138383, n(odd) = 32576368
Input x value(0 to EXIT):5
m(total) = 49134223, n(odd) = 32568252
Input x value(0 to EXIT):5
m(total) = 49132382, n(odd) = 32566402
Input x value(0 to EXIT):5
m(total) = 49132123, n(odd) = 32561868
Input x value(0 to EXIT):5
m(total) = 49133693, n(odd) = 32569478
Input x value(0 to EXIT):5
m(total) = 49137184, n(odd) = 32568205
Input x value(0 to EXIT):7
m(total) = 49803695, n(odd) = 33156991
Input x value(0 to EXIT):7
m(total) = 49789106, n(odd) = 33148352
Input x value(0 to EXIT):7
m(total) = 49796451, n(odd) = 33150304
Input x value(0 to EXIT):7
m(total) = 49801007, n(odd) = 33157712
Input x value(0 to EXIT):7
m(total) = 49798112, n(odd) = 33154522
Input x value(0 to EXIT):0

[ 本帖最后由 无心人 于 2008-7-22 18:49 编辑 ]

mathe 发表于 2008-7-22 18:49:54

原帖由 无心人 于 2008-7-22 18:26 发表 http://bbs.emath.ac.cn/images/common/back.gif
如果每次以均等概率向前走x的距离或者向后走1的距离(x>1),那么最后能够返回起始位置(或之前)的概率是多少?

你的叙述有问题啊
我怎么看都是进四退一
这个式引用过去的题目，我现在将题目格式修改了一下

无心人 发表于 2008-7-22 19:04:05

上面是n=0结果
似乎不是1/2

无心人 发表于 2008-7-22 20:25:07

起点是10000

Input x value(0 to EXIT):2
m(total) = 5001, n(odd) = 1901
Input x value(0 to EXIT):2
m(total) = 4999, n(odd) = 1848
Input x value(0 to EXIT):2
m(total) = 5000, n(odd) = 1880
Input x value(0 to EXIT):3
m(total) = 9998, n(odd) = 3445
Input x value(0 to EXIT):3
m(total) = 10000, n(odd) = 3459
Input x value(0 to EXIT):3
m(total) = 9998, n(odd) = 3562
Input x value(0 to EXIT):4
m(total) = 14994, n(odd) = 6666
Input x value(0 to EXIT):4
m(total) = 14999, n(odd) = 6840
Input x value(0 to EXIT):4
m(total) = 15001, n(odd) = 6703
Input x value(0 to EXIT):5
m(total) = 19990, n(odd) = 8472
Input x value(0 to EXIT):5
m(total) = 20003, n(odd) = 8454
Input x value(0 to EXIT):5
m(total) = 19990, n(odd) = 8398
Input x value(0 to EXIT):6
m(total) = 24993, n(odd) = 11732
Input x value(0 to EXIT):6
m(total) = 24994, n(odd) = 11792
Input x value(0 to EXIT):6
m(total) = 24994, n(odd) = 11660
Input x value(0 to EXIT):11
m(total) = 49968, n(odd) = 23422
Input x value(0 to EXIT):11
m(total) = 49975, n(odd) = 23370
Input x value(0 to EXIT):100
m(total) = 492558, n(odd) = 243975
Input x value(0 to EXIT):100
m(total) = 492694, n(odd) = 243656
Input x value(0 to EXIT):999
m(total) = 4545113, n(odd) = 2274285
Input x value(0 to EXIT):999
m(total) = 4545223, n(odd) = 2272897
Input x value(0 to EXIT):999
m(total) = 4545125, n(odd) = 2273335
Input x value(0 to EXIT):1000
m(total) = 4545749, n(odd) = 2269768
Input x value(0 to EXIT):1000
m(total) = 4545780, n(odd) = 2269447
Input x value(0 to EXIT):1000
m(total) = 4545918, n(odd) = 2270471
Input x value(0 to EXIT):0

无心人 发表于 2008-7-22 21:49:10

:lol

呵呵，回复帖子超过mathe 1000了
下个目标是超gxq 2000
哈哈

shshsh_0510 发表于 2008-7-24 16:08:00

111111111111111111

shshsh_0510 发表于 2008-7-24 16:08:30

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