正则表达式if else [英] Regular Expression if else

问题描述

您好

我正在寻找如何使用if else语句创建正则表达式。我想创建一个只允许波纹图案的正则表达式

 ANANNNNN 
 ANNANNNN 
 NANNNNNN 

其中A = [az，AZ]

N = [0-9]

感谢您的帮助

谢谢

解决方案

假设这些只是示例，你想要任何具有这种格式的东西：

 [a- zA-Z] \d + [a-zA-Z] \d + | \d [a-zA-Z] \d + 

如果你想要的话你所展示的是：

 [a-zA-Z] \d [a-zA-Z] \d {5} | [a-zA -Z] \d\d [A-ZA-Z] \d {4} | \d [A-ZA-Z] \d {6} 

Hi There
I am looking how to create regular expression with if else statement on. what I wanted to create a regular expression which allow only the bellow patterns

ANANNNNN
ANNANNNN
NANNNNNN

where A =[a-z,A-Z]
N=[0-9]
appreciate your help
thanks

解决方案

Assuming those are just examples and you want anything with that kind of format:

[a-zA-Z]\d+[a-zA-Z]\d+|\d[a-zA-Z]\d+

If you want exactly what you show, then:

[a-zA-Z]\d[a-zA-Z]\d{5}|[a-zA-Z]\d\d[a-zA-Z]\d{4}|\d[a-zA-Z]\d{6}

这篇关于正则表达式if else的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！