如何拆分值并保存到 Map java？

Question

我有一个字符串，它有一些| 分隔值

He run|running|runned quickly, then he|she goes for practice

将|分隔值保存在Hashmap中的可能方法是什么 Map<Integer , List<String>> 以便首先存储地图

 1 -> ["run","running","runned"]
 2 -> ["he","she"]

如何实现。拆分此字符串并将值保存在 Map 中的最佳方法是什么。

Answer 1

试试这个：

String text = "He run|running|runned quickly, then he|she goes for practice";

// match all the parts which are sequences of words delimited by |
Matcher matcher = Pattern.compile("(\\w+(?:\\|\\w+)+)").matcher(text);

Map<Integer, List<String>> map = new HashMap<>();

// add matches as long as we find any.
while (matcher.find()) {
    map.put(map.size() + 1, 
    // split matches by | and convert them to a list
    Arrays.stream(matcher.group(1).split("\\|")).collect(Collectors.toList()));
}

输出：

map.forEach((k, v) -> 
    System.out.printf("%s = %s\n", k, v.stream().collect(Collectors.joining(","))));

产量：

1 = run,running,runned
2 = he,she