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[函数] 【原创】迭代计算,你会用吗?

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发表于 2010-6-21 14:11 | 显示全部楼层 |阅读模式
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">有的时候,我们在输入公式的时候输入错误,例如我们在</span><span lang="EN-US"><font face="Calibri">A1</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">单元格输入公式</span><span lang="EN-US"><font face="Calibri">=A1</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">,系统就会弹出循环引用的警告。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;"></span>&nbsp;</p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;"></span><span lang="EN-US"><p></p></span></p><p></p>&nbsp;<p></p><p><br/></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">并且,同时会弹出公式审核工具栏及帮助。这的确给我们输入公式带来的不小的麻烦。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;"></span></p><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;"><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">通常情况下,我们只需要再输入正确的公式就可以了。可是,你是否曾经仔细研究过,这个循环引用到底有什么用呢??</span></p><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;"><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">其实循环引用在</span><span lang="EN-US"><font face="Calibri">EXCEL</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">中并不仅仅是作为一种错误形式来出现的,循环引用也称做迭代计算,在</span><span lang="EN-US"><font face="Calibri">EXCEL</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">中,它就像是一柄双刃剑,用的不好,可能导致你的</span><span lang="EN-US"><font face="Calibri">EXCEL</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">公式全部混乱,可是,如果稍加利用,能发挥迭代计算的长处的话,也可以给我们的工作带来极大的方便。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;"></span></p><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;"><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">下面我通过几个简单的例子来稍微探讨一下迭代计算的用处。</span><span lang="EN-US"><p></p></span></p><p></p><p></p></span><span lang="EN-US"><p></p></span></span><span lang="EN-US"><p></p></span></span><span lang="EN-US"><p></p></span><font face="黑体" color="#ff0000" size="6"><strong><em><u>38楼已添加此文中所有示例,以供大家参考。</u></em></strong></font>
[此贴子已经被作者于2010-6-23 18:59:16编辑过]

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参与人数 7 +17 收起 理由
feoy + 1 赞一个
ooqew1 + 1 很给力!
gate01 + 1 迭代,迭代,好文,好文!
水上漂123 + 6 很给力!
lutqhywow + 1 很给力!

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 楼主| 发表于 2010-6-21 14:11 | 显示全部楼层

示例一:生成不变的随机数

<h1>示例一:生成不变的随机数</h1><p>&nbsp;</p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">题目:我们需要生成一个随机数,而这个随机数不随工作表的重算而改变。即生成一个不再变动的随机数。</span><span lang="EN-US"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">解决步骤:我们先勾选【菜单】——【工具】——【选项】——【重新计算】选项卡中的迭代计算,将迭代次数设为</span><span lang="EN-US"><font face="Calibri">1</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">次,然后在</span><span lang="EN-US"><font face="Calibri">A1</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">输入公式</span><span lang="EN-US"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><font face="Calibri">A1=IF(A1=0,RAND(),A1)<p></p></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><p><font face="Calibri">&nbsp;</font></p></span></p><p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-bidi-font-size: 11.0pt; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">如此,生成的随机数就不再随工作表的重算而变动了。</span></p><p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-bidi-font-size: 11.0pt; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"></span>&nbsp;</p><p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-bidi-font-size: 11.0pt; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"></span>&nbsp;</p><p></p><p></p><p>(<span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">因为</span><span lang="EN-US"><font face="Calibri">EXCEL</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">版本的关系,我所有的示例都将用</span><span lang="EN-US"><font face="Calibri">EXCEL2007</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">来进行操作。用</span><span lang="EN-US"><font face="Calibri">EXCEL2003</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">的同学请进行相应的转化。其中用到</span><span lang="EN-US"><font face="Calibri">randbetween()</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">函数的部分,可能需要在</span><span lang="EN-US"><font face="Calibri">EXCEL2003</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">加载宏。</span>)<br/></p>
[此贴子已经被作者于2010-6-21 14:14:14编辑过]

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我说的是下拉填充  发表于 2012-5-23 15:21
这种填法每个单元格的值都一样的  发表于 2012-5-23 15:19
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 楼主| 发表于 2010-6-21 14:12 | 显示全部楼层

迭代计算公式的语法

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">我们来看上面这个公式</span><span lang="EN-US"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><font face="Calibri">A1=IF(A1=0,RAND(),A1)<p></p></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">这是迭代计算中常用的形式,也可以算做是一种语法吧。请大家向学习英语语法一样,将其牢牢记在心里。因为,它真的很有用。</span><span lang="EN-US"><p></p></span></p><p>&nbsp;</p><p><br/></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">第一部分的条件判断式,如果需要满足多个条件时,要善于利用</span><span lang="EN-US"><font face="Calibri">and,or</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">等逻辑函数来组件多重的判断条件。</span><span lang="EN-US"><p></p></span></p><p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-bidi-font-size: 11.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">第二部分的迭代表达式,通常要利用</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: &quot;Calibri&quot;,&quot;sans-serif&quot;; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-latin; mso-bidi-font-size: 11.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">rand(),randbetween(),today(),now()</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-bidi-font-size: 11.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">等易失性函数</span></p>
[此贴子已经被作者于2010-6-21 14:15:28编辑过]

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 楼主| 发表于 2010-6-21 14:12 | 显示全部楼层

实例二:自动填写当前的时间或者日期

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">再来看一个示例</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;"></span>&nbsp;</p><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;"><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">题目:假设每条数据有</span><span lang="EN-US"><font face="Calibri">3</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">个必填项目,当这三个必填项目全部填写完毕之后,自动在数据的最末尾填写上相应的完成的时间或者日期。</span><span lang="EN-US"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><p><font face="Calibri">&nbsp;</font></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">通常,要用</span><span lang="EN-US"><font face="Calibri">VBA</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">来解决,可以,也可以利用迭代计算来处理。</span><span lang="EN-US"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><p><font face="Calibri">&nbsp;</font></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">步骤:</span><span lang="EN-US"><font face="Calibri">1</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">、勾选【菜单】——【工具】——【选项】——【重新计算】选项卡中的迭代计算,将迭代次数设为</span><span lang="EN-US"><font face="Calibri">1</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">次</span><span lang="EN-US"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><font face="Calibri"><span style="mso-tab-count: 1;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>2</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">、输入公式</span><span lang="EN-US"><font face="Calibri">=IF(COUNTA(A2:C2)&lt;3,"",IF(AND(D2&lt;&gt;"",D2&lt;&gt;0),D2,NOW()))</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">,然后下拉</span><span lang="EN-US"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><p><font face="Calibri">&nbsp;</font></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">这样,公式自动生成的就是完成每条数据的时间。而当数据没有填写完整的时候,时间一栏将显示为空白。</span><span lang="EN-US"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><p><font face="Calibri">&nbsp;</font></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">具体请见下图演示。</span><span lang="EN-US"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;">&nbsp;</p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><p></p></span>&nbsp;</p></span><span lang="EN-US"><p></p></span>&nbsp;<br/>
[此贴子已经被作者于2010-6-21 14:16:34编辑过]

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 楼主| 发表于 2010-6-21 14:12 | 显示全部楼层

实例三:求历史最高值

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">尽管是采用同样的原理,但是,我还是要不厌其烦的举不同的例子来巩固上面迭代计算的语法知识。</span><span lang="EN-US"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">题目:假设每天的</span><span lang="EN-US"><font face="Calibri">9</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">:</span><span lang="EN-US"><font face="Calibri">00</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">~</span><span lang="EN-US"><font face="Calibri">19</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">:</span><span lang="EN-US"><font face="Calibri">00</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">每个钟头记录一次温度。每天的温度都在不断的变化,每天都有当天的最高温。当当天最高温超过历史最高温度的时候,历史最高温度变为当天的最高温度。否则,历史最高温度不变化。</span><span lang="EN-US"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><p><font face="Calibri">&nbsp;</font></p></span></p><p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-bidi-font-size: 11.0pt; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">步骤:请直接见图解</span></p><p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-bidi-font-size: 11.0pt; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"></span>&nbsp;</p><br/>
[此贴子已经被作者于2010-6-21 14:17:35编辑过]

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 楼主| 发表于 2010-6-21 14:12 | 显示全部楼层

示例四:不重复抽样

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">题目:我们需要从</span><span lang="EN-US"><font face="Calibri">1</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">~</span><span lang="EN-US"><font face="Calibri">100</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">中抽取不重复的</span><span lang="EN-US"><font face="Calibri">25</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">个数据。应该如何解决呢?</span><span lang="EN-US"><p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><p><font face="Calibri">&nbsp;</font></p></span></p><p><font face="Calibri">&nbsp;</font></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">这题抽取随机数可以用</span><span lang="EN-US"><font face="Calibri">randbetween()</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">来解决,可是,如何保证随机抽取的随机数是不重复的呢?</span><span lang="EN-US"><p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><p><font face="Calibri">&nbsp;</font></p></span></p><p><font face="Calibri">&nbsp;</font></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">步骤:</span><span lang="EN-US"><font face="Calibri">1</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">、勾选【菜单】——【工具】——【选项】——【重新计算】选项卡中的迭代计算,将迭代次数设为最大值</span><span lang="EN-US"><font face="Calibri">32767.<p></p></font></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><font face="Calibri"><span style="mso-tab-count: 1;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>2</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">、</span><span lang="EN-US"><font face="Calibri">A1</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">输入公式</span><span lang="EN-US"><font face="Calibri">=IF(OR(A1=0,COUNTIF($A$1:A1,A1)&gt;1),RANDBETWEEN(1,100),A1)</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">,然后下拉值</span><span lang="EN-US"><font face="Calibri">A25</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><font face="Calibri"></font></span>&nbsp;</p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><font face="Calibri"><p></p></font></span></p><p></p>&nbsp;<p></p><p><br/></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">大家可以验证,以上生成的随机数都是不重复的。(具体原理我就不再赘述了)</span><span lang="EN-US"><p></p></span></p>
[此贴子已经被作者于2010-6-21 14:18:50编辑过]

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 楼主| 发表于 2010-6-21 14:13 | 显示全部楼层

示例五:多行多列求不重复值

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">其实迭代计算还可以解决一些比较高级的问题。比如说多行多列取不重复值的问题。</span><span lang="EN-US"><br/>&nbsp;&nbsp;&nbsp; <p></p></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">这个问题要是用普通的函数来解决,公式将会非常的冗长。</span></p><p></p><p><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">如果我们变换思路,进行迭代计算呢。</span><span lang="EN-US"><br/>&nbsp;</span></p><p><span lang="EN-US"></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">首先,我们需要知道这个多行多列到底有多少个不重复的值。例如,数据区域为$A$1:$C$10<br/>用经典的数组公式=SUM(1/COUNTIF($A$1:$C$10,$A$1:$C$10))来求的不重复值的个数,例如为20个。<br/>&nbsp;<br/>其次,我们要将迭代的次数设为最大值32767,最好将工作表重算的方式设置为手动重算。<br/>&nbsp;<br/>然后,我们就可以设置我们的迭代公式了,例如在E1输入=IF(OR(E1=0,COUNTIF($E$1:E1,E1)&gt;1),INDEX($A$1:$C$10,RANDBETWEEN(1,10),RANDBETWEEN(1,3)),E1),然后下拉至E20<br/>&nbsp;<br/>当然,因为是生成随机数的方式,所以可能并不容易很轻易的全部得到不重复值。特别是当这个数据区域比较大的时候,可能一次得到全部不重复值的概率更小。所以,我们需要多重算几次。重算的方法为按F9.你可以按住F9一直重算,知道你的数据不再变动为止(当数据不再变动的时候,一般就是已经找到满足所有条件的值了,也E1:E20内的值就是所有的不重复值)<br/>&nbsp;<br/></span></p><p><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;"></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">上面的示例并没有一次得到全部的结果,重算了</span><span lang="EN-US"><font face="Calibri">3</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">次之后,得出了最后的结果(用条件格式测试没有发现重复值)</span><span lang="EN-US"><br/>&nbsp;&nbsp;&nbsp;<p></p></span></p><p></p><p></p><p></p><p></p><p></p><p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-bidi-font-size: 11.0pt; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">特别要注意的是,该方法只适合于数据不太多的情况,当数据太多时,迭代次数</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Calibri','sans-serif'; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-latin; mso-bidi-font-size: 11.0pt; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">32767</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-bidi-font-size: 11.0pt; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">可能迭代不出结果来。</span></p>
[此贴子已经被作者于2010-6-24 9:13:42编辑过]

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 楼主| 发表于 2010-6-21 14:13 | 显示全部楼层

示例六:规划求解

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">规划求解可以帮助我们解决很多很复杂的问题。其中一个很有用的规划即</span><span lang="EN-US"><font face="Calibri">0-1</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">规划。在实际生活中我们也会经常遇到。</span><span lang="EN-US"><p></p></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">题目:有一列数据,共</span><span lang="EN-US"><font face="Calibri">100</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">个,要从中找出和为某个特定数的组合。例如</span><span lang="EN-US"><font face="Calibri">=3000</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">。</span><span lang="EN-US"><p></p></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">通常此类问题用规划求解来解决,但是当数据比较多的时候,规划求解的过程通常会比较长,有时甚至得不出结果来。</span><span lang="EN-US"><span lang="EN-US"><p></p></span><p></p><p></p><p></p><p></p><p></p></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p><font face="Calibri">&nbsp;</font><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">而这时我们可以利用迭代计算来尝试一下。</span><span lang="EN-US"><p></p></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><span lang="EN-US"><p></p></span><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan;"><span lang="EN-US"><p></p><p><font face="Calibri"></font></p><p></p></span></p><p></p><p><font face="Calibri"></font></p><p></p><p></p><p></p><p><font face="Calibri"></font></p><p></p><p></p><p></p><p><font face="Calibri"></font></p><p></p><font face="Calibri"></font><p></p><p><font face="Calibri">A列的数据是随机生成的,其中迭代计算找到最终的结果仅仅只用了2秒钟不到。<br/>而同样的问题,用规划求解得出结果用时超过2分钟(可能是数据太多,当数据太多的时候,规划求解会生成大量的中间值,这也影响了求解的速度</font><span lang="EN-US"><span lang="EN-US"><p></p></span><p></p><p></p><p></p></span><p></p><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">当然,仅仅在这个问题上,迭代计算用法优于规划求解,而规划求解的很多问题用迭代计算无法解决或者解决的方法超级复杂。</span><span lang="EN-US"><p></p></span></p><p></p><p></p><p></p><p></p><p></p><p><span lang="EN-US"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">迭代计算在</span><span lang="EN-US"><font face="Calibri">EXCEL</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">中是一道很独特的风景线。理论上来说,迭代计算甚至能够解决像“数独”这样复杂的问题。当然,这得需要你的机器足够好,耐心足够强,最重要的是,需要你的人品超级好,因为</span><span lang="EN-US"><font face="Calibri">32767</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">次的迭代次数看似很多,但是在解决大型问题的时候仍然是聊胜于无。用我上面的迭代法则来解决数独的问题,因为每次是用</span><span lang="EN-US"><font face="Calibri">randbetween(1,9)</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">生成随机数,所以,每次生成什么样的数据只能听天由命了。</span><span lang="EN-US"><p></p></span><p></p></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p><font face="Calibri">&nbsp;</font><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin;">上面一些迭代计算的浅显研究,希望能够抛砖引玉。同时希望更多的人能与我分享探讨这方面的知识。</span><span lang="EN-US"><p></p></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p>
[此贴子已经被作者于2010-6-24 9:07:38编辑过]

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发表于 2010-6-21 14:17 | 显示全部楼层

<p>老兄,辛苦了!</p>[em01]
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发表于 2010-6-21 14:36 | 显示全部楼层

多谢分享[em26]辛苦LZ了
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