java - 如何仅按字符拆分一串数字和字符

Question

我需要将一个字符串拆分为数字序列的各个部分以及它们之间的字符。像这样:

input:    "123+34/123(23*12)/100"

output[]:["123","+","34","/","123","(","23","*","12",")","/","100"]

这在某种程度上是可能的，还是可以将一个字符串拆分为多个字符？否则，是否可以在 Java 中循环遍历字符串？

Answer 1

您可以使用正则表达式。

String input = "123+34/123(23*12)/100";
Pattern pattern = Pattern.compile("\\d+|[\\+\\-\\/\\*\\(\\)]");
Matcher matcher = pattern.matcher(input);
while(matcher.find()) {
    System.out.println(matcher.group());
}