正则表达式删除重复字母 [英] Regex to remove duplicate letters

问题描述

我在 Notepad++ 中有一个文档，其中每一行可以有任意字符组合.例如:

I have a document in Notepad++ where each line can have any combination of characters. For example:

RRGG
U
XB
UUGG
UG

我想要的是删除任何重复字符的正则表达式.因此，鉴于上述情况，我将得到:

What I would like, is a regex to remove any duplicate characters. So, given the above, I would be left with:

RG
U
XB
UG
UG

我尝试根据我在网上看到的内容找到 ([a-z]) 并替换为 \1 ，但我一无所获.我什至试图找到 ([az])+，但这只是让我得到了最后一个字母(不知道为什么我认为这会起作用，除了我在正则表达式方面很糟糕).我也不想摆脱任何空格或空行.这样做的最佳方法是什么?

I've tried finding ([a-z]) and replacing with \1 based on something I'd seen online, but I got nothing. I've even tried finding ([a-z])+, but that just got me the last letter on the line(not sure why I thought that would work, other than I'm horrible at regex). I also don't want to get rid of any whitespace, or empty lines. What's the best way to do this?

推荐答案

查找:

([A-Z])\1+

替换为:

\1

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