如何在字母和数字之间（或数字和字母之间）拆分字符串？ [英] How to split a string between letters and digits (or between digits and letters)?

问题描述

我正在尝试找出一种在java中拆分字符串的方法，该方法遵循如下模式：

I'm trying to work out a way of splitting up a string in java that follows a pattern like so:

String a = "123abc345def";

此结果应如下：

x[0] = "123";
x[1] = "abc";
x[2] = "345";
x[3] = "def";

然而，我完全不知道如何实现这一目标。请有人帮帮我吗？我尝试在网上搜索类似的问题，但在搜索中很难正确地说出来。

However I'm completely stumped as to how I can achieve this. Please can someone help me out? I have tried searching online for a similar problem, however it's very difficult to phrase it correctly in a search.

请注意：字母&数字可能会有所不同（例如，可能有一个像'1234a5bcdef'这样的字符串）

Please note: The number of letters & numbers may vary (e.g. There could be a string like so '1234a5bcdef')

推荐答案

您可以尝试拆分（？< = \D）（？= \d）|（？< = \d）（？= \ D），如：

str.split("(?<=\\D)(?=\\d)|(?<=\\d)(?=\\D)");

它匹配数字和非数字之间的位置（按任意顺序）。

It matches positions between a number and not-a-number (in any order).

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