将字符串分成等份（java / groovy） [英] Splitting a string into equals parts (java/groovy)

问题描述

我想将字符串拆分为具有20个字符（或更少的尾部）的子字符串。

I'd like to split the string into substrings which has 20 chars (or less for the tail). Is there some library or I need to make the class for that?

推荐答案

您应该使用：$ b $是否有一些库或我需要为此类创建类？ b

you should use :

s.split("(?<=\\G.{20})");

\G 是一个零宽度断言匹配前一场比赛结束的位置。如果没有以前的匹配，则匹配输入的开头，与 \A 相同。封闭倒序与最后一场比赛结束时的20个字符相匹配。

\G is a zero-width assertion that matches the position where the previous match ended. If there was no previous match, it matches the beginning of the input, the same as \A. The enclosing lookbehind matches the position that's 20 characters along from the end of the last match.

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