excel怎么随机生成字母

Posted 2023-04-05

excel怎么随机生成字母，比如CTGATGTGCATCGGCAAGTGG 这一种的 21个字母，都是由CTGA4个字母组成的？

　　可以使用CHAR函数返回相应的英文字母（编码在65-90之间）。

　　可以使用RANDBETWEEN随机返回字母的编码65-90。多位字母可以使用文本链接符号&连接即可。

　　例如：公式=CHAR(RANDBETWEEN(65,90))结果会随机显示一位字母。

CHAR函数用途：返回对应于数字代码的字符，该函数可将其他类型的电脑文件中的代码转换为字符(操作环境为MacintoshMacintosh 字符集和WindowsANSI 字符集)。

语法：CHAR(number)。

参数：Number 是用于转换的字符代码，介于1～255 之间(使用当前计算机字符集中的字符)。

实例：公式“=CHAR(56)”返回8，=CHAR(36)返回$。

参考技术A 这个需要建立一个字母表，并对应有序号，然后通过rand()函数产生随机数，然后对应于序号，引用你的字母表，产生随机字母组合。 参考技术B 给你个思路，=INDEX("C","T","G","A",INT(RAND()*4+1))，可随机生成四个字母中的一个 参考技术C =UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))&UNICHAR(INDEX(65,67,71,84,RANDBETWEEN(1,4)))
数组公式本回答被提问者采纳 参考技术D =CHAR(RANDBETWEEN(65,90))&CHAR(RANDBETWEEN(65,90))&CHAR(RANDBETWEEN(65,90))&CHAR(RANDBETWEEN(65,90))追问

非常感谢！

在excel中怎样生成随机的4位字母数字组合，谢谢

产生大写字母与数字的组合
=CHAR(RANDBETWEEN(65,90))
=IF(RAND()<0.5,CHAR(RANDBETWEEN(48,57)),CHAR(RANDBETWEEN(65,90))) &IF(RAND()<0.5,CHAR(RANDBETWEEN(48,57)),CHAR(RANDBETWEEN(65,90)))&IF(RAND()<0.5,CHAR(RANDBETWEEN(48,57)),CHAR(RANDBETWEEN(65,90)))&IF(RAND()<0.5,CHAR(RANDBETWEEN(48,57)),CHAR(RANDBETWEEN(65,90))) 参考技术A =if(randbetween(0,1),randbetween(0,9),char(randbetween(65,90)))&if(randbetween(0,1),randbetween(0,9),char(randbetween(65,90)))&if(randbetween(0,1),randbetween(0,9),char(randbetween(65,90)))&if(randbetween(0,1),randbetween(0,9),char(randbetween(65,90)))