趣味数学

海之郎 · 发表于 2004-7-28 01:17:48

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<TD width="100%"><IMG align=absMiddle border=0 src="http://www.shumo.com/bbs/Skins/Default/topicface/face5.gif"> 趣味数学——谁能做这题？

谁能做这题？

 看过电视＜＜射雕英雄传>>的同学都知道，有这么一个幻方（如下图），它无论横着加，竖着加还是斜着加，总是等于15，聪明的英姑花了好几年的时间才得到这一结论，却没有想到桃花岛的黄老邪早就将它编成口诀“二四为肩，五居中央，填九履一“并创造出”桃花阵”。现给你1至16这16个自然数，请你构造出一个类似上图的幻方。（综合）

2 9 4
7 5 3
6 1 8

----------------------------------------------
相知在数模，结为朋友，这是人生的一笔财富！
相约在数模，共同努力，这是提高能力的一条捷径！
------------------------ 阿能

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海之郎 · 发表于 2004-7-28 01:23:51

<

> 我试试我的QQ155267584 愿交天下友！<

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海岩秋沙 · 发表于 2004-7-28 02:41:58

<

>哎呀在matlab中运行magic()<

>命令就可以解决了！呵呵 <

>LOOK:> magic(8)ans = 64 2 3 61 60 6 7 57
 9 55 54 12 13 51 50 16
17 47 46 20 21 43 42 24
40 26 27 37 36 30 31 33
32 34 35 29 28 38 39 25
41 23 22 44 45 19 18 48
49 15 14 52 53 11 10 56
 8 58 59 5 4 62 63 1>> magic(9)ans = 47 58 69 80 1 12 23 34 45
57 68 79 9 11 22 33 44 46
67 78 8 10 21 32 43 54 56
77 7 18 20 31 42 53 55 66
 6 17 19 30 41 52 63 65 76
16 27 29 40 51 62 64 75 5
26 28 39 50 61 72 74 4 15
36 38 49 60 71 73 3 14 25
37 48 59 70 81 2 13 24 35

夸父之后 · 发表于 2004-8-20 19:33:53

<

>这是魔方阵，有算法的呀<

>参见谭浩强《c语言教程》习题里有。

liujikun29 · 发表于 2004-8-21 00:19:55

是的在一个网站：<a href="http://www.cstduyhome.com" target="_blank" >www.cstduyhome.com</A>

liujikun29 · 发表于 2004-8-21 00:25:13

<

>a=magic(4)<

>a =<

> 16 2 3 13
 5 11 10 8
 9 7 6 12
 4 14 15 1a=magic(4)a = 16 2 3 13
 5 11 10 8
 9 7 6 12
 4 14 15 1这样不就可以了吗？

badbody88 · 发表于 2004-8-21 02:39:46

这个问题应该给初中生

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