如何在java中拆分字符串并包含分隔符

Question

我想使用分隔符“AAAA”拆分这个字符串“ahhhaaartfuhlaaaaahv”，并将其保存到包含分隔符的数组中。（所需输出：[AHHHA、AAAA、RTFUHLA、AAAA、HV]）。我有以下代码，但输出与我想要的输出不一样

  String y = "AHHHAAAAARTFUHLAAAAAHV";
  System.out.println(Arrays.toString(y.split("((?<=AAAA)|(?=AAAA))")));

输出： [AHHH，A，AAA，A，RTFUHL，A，AAA，A，HV]

Answer 1

你可以使用^{}

(?=AAAA[^A]：向前看以匹配AAAA和非A字符

|：或

(?<=AAAA(?=[^A])))：正向向后看，将AAAA与向前看匹配，以确保没有A字符

String y = "AHHHAAAAARTFUHLAAAAAHV";
System.out.println(Arrays.toString(y.split("(?=AAAA[^A]|(?<=AAAA(?=[^A])))")));

输出：

[AHHHA, AAAA, RTFUHLA, AAAA, HV]