一道经典的智力题（12球称三次找出异常一球）-探索成功路

homjay 发表于 2005-6-1 22:02:25

一道经典的智力题（12球称三次找出异常一球）

一道经典的智力题（12球称三次找出异常一球） 
 
有十二个乒乓球特征相同，其中只有一个重量异常，现在要求用一部没有砝码的天平称三次，将那个重量异常的球找出来。 
 
　　评分标准： 
　　1、30分钟以内做出来：智力很高很高很高，不知道有多高。 
　　2、60分钟以内做出来：智力很高。 
　　3、两小时内做出来：　智力相当高。 
　　4、1天或者1周内做出来：智力也很高，而且还是一个有毅力的人。 
　　5、10分钟内做出来：你或者以前做过，或者多半是个马虎的人。 
 
这里的问题关键是异常，所以不知道是轻了，还是重了，并且解题最后还要知道这球是轻还是重了。 
 
这个问题是我偶而在论坛里看到的，我向来是觉得自己的智商还成，但一小时过去，我没有能解出来，就放弃了，当然我，仍然没有放过 google ，大致知道了解法。 
 
终于，看到了我们站点的第一智商的 qiushuiwuhen 在 2002 年中，用JS写的解法，非常的棒，有兴趣的人可以先自己解一下这个题（哈哈，计一下时，另不准上网搜索），回头再看看他的JS，学习一下他的方法。他的解法，我放在下一页了。大家要忍住不要点哦。

homjay 发表于 2005-6-1 22:03:10

re:在12个小球中有一个和其他不同（或...

在12个小球中有一个和其他不同（或轻或重）,现在先拿起笔,记下哪个球重或者轻，然后继续下面的游戏 
<select name=one></select> 
<select name=two></select> 
<select name=three></select> 
<select name=four></select> 
 
<script> 
var arrSel=["one","two","three","four"];//arrSel定义了要修改的下拉框 
var i=0,arrData=[];//arrData中搁的是数据,每条都显示各级的数据 
arrData=["(1,2,3,4)比(5,6,7,8)","请先做前面的选择","请先做前面的选择","请先做前面的选择"] 
arrData=["重","(1,2,5)比(3,6,9)","请先做前面的选择","请先做前面的选择"] 
arrData=["重","重","(1)比(2)","请先做前面的选择"] 
arrData=["重","重","重","1球比较重"] 
arrData=["重","重","平","6球比较轻"] 
arrData=["重","重","轻","2球比较重"] 
arrData=["重","平","(7)比(8)","请先做前面的选择"] 
arrData=["重","平","重","8球比较轻"] 
arrData=["重","平","平","4球比较重"] 
arrData=["重","平","轻","7球比较轻"] 
arrData=["重","轻","(1)比(3)","请先做前面的选择"] 
arrData=["重","轻","重","无解"] 
arrData=["重","轻","平","5球比较轻"] 
arrData=["重","轻","轻","3球比较重"] 
arrData=["平","(9,10)比(1,11)","请先做前面的选择","请先做前面的选择"] 
arrData=["平","重","(9)比(11)","请先做前面的选择"] 
arrData=["平","重","重","9球比较重"] 
arrData=["平","重","平","11球比较轻"] 
arrData=["平","重","轻","10球比较重"] 
arrData=["平","平","(1)比(12)","请先做前面的选择"] 
arrData=["平","平","重","12球比较轻"] 
arrData=["平","平","平","无解"] 
arrData=["平","平","轻","12球比较重"] 
arrData=["平","轻","(9)比(10)","请先做前面的选择"] 
arrData=["平","轻","重","9球比较轻"] 
arrData=["平","轻","平","11球比较重"] 
arrData=["平","轻","轻","10球比较轻"] 
arrData=["轻","(1,2,5)比(3,6,9)","请先做前面的选择","请先做前面的选择"] 
arrData=["轻","重","(1)比(3)","请先做前面的选择"] 
arrData=["轻","重","重","3球比较轻"] 
arrData=["轻","重","平","5球比较重"] 
arrData=["轻","重","轻","无解"] 
arrData=["轻","平","(7)比(8)","请先做前面的选择"] 
arrData=["轻","平","重","7球比较重"] 
arrData=["轻","平","平","4球比较轻"] 
arrData=["轻","平","轻","8球比较重"] 
arrData=["轻","轻","(1)比(2)","请先做前面的选择"] 
arrData=["轻","轻","重","2球比较轻"] 
arrData=["轻","轻","平","6球比较重"] 
arrData=["轻","轻","轻","1球比较轻"] 
</script> 
<script> 
function qswhInit(num){ 
/******* by qiushuiwuhen(2002-5-15) ********/ var i,j,arrTemp=[]; for(i=0;i<num;i++)arrTemp=document.all(arrSel).options.text if(num==arrSel.length){//这里处理最后的数据。 return; } with(document.all(arrSel)){ length=0 for(i=0;i<arrData.length;i++){ for(j=0;j<num;j++)if(arrTemp!=arrData)break; if(j!=num)continue; if(length==0||options.text!=arrData) options.text=arrData; } onchange=new Function("qswhInit("+(num+1)+")"); onchange(); } 
} 
qswhInit(0);//初始化 
</script>

寒林暮雪 发表于 2005-6-1 22:38:44

re:楼主啊～！这道题目在幽默与灌水里我已...

楼主啊～！ 
这道题目在幽默与灌水里我已经答过了呢～！

潜川发表于 2005-6-2 08:23:26

re:是啊！

是啊！

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