如何按数字和单词组拆分文本

debugcn 发表于 Dev

悉达多

假设我有一个包含 - 一些逗号分隔的字符串 - 和文本的字符串

  my_string =  "2 Marine Cargo       14,642 10,528       16,016 more text 8,609 argA 2,106 argB"

我想将它们提取到一个由“数字”和“词组”分割的数组中

 resultArray = {"2", "Marine Cargo", "14,642", "10,528", "16,016",
                "more text", "8,609", "argA", "2,106", "argB"};

注意 0：每个条目之间可能有多个空格，应忽略。

注 1：“Marine Cargo”和“more text”没有分成不同的字符串，因为它们是一组没有数字分隔的单词。而 argA 和 argB 是分开的，因为它们之间有一个数字。

安琪儿

您可以尝试使用此正则表达式进行拆分

([\d,]+|[a-zA-Z]+ *[a-zA-Z]*) //note the spacing between + and *.

[0-9,]+ // 将搜索一位或多位数字和逗号
[a-zA-Z]+ [a-zA-Z] // 将搜索一个词，然后是一个空格（如果有），然后是另一个词（如果有）。
```
String regEx = "[0-9,]+|[a-zA-Z]+ *[a-zA-Z]*";
```

你像这样使用它们

public static void main(String args[]) {

  String input = new String("2 Marine Cargo       14,642 10,528       16,016 more text 8,609 argA 2,106 argB");
  System.out.println("Return Value :" );      

  Pattern pattern = Pattern.compile("[0-9,]+|[a-zA-Z]+ *[a-zA-Z]*");

  ArrayList<String> result = new ArrayList<String>();
  Matcher m = pattern.matcher(input);
  while (m.find()) { 
         System.out.println(">"+m.group(0)+"<");  
         result.add(m.group(0));

   }
}

以下是从https://regex101.com自动生成的 RegEx 的输出以及详细说明

1st Alternative [0-9,]+
Match a single character present in the list below [0-9,]+
+ Quantifier — Matches between one and unlimited times, as many times as possible, giving back as needed (greedy)
0-9 a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)
, matches the character , literally (case sensitive)


2nd Alternative [a-zA-Z]+ *[a-zA-Z]*
Match a single character present in the list below [a-zA-Z]+
+ Quantifier — Matches between one and unlimited times, as many times as possible, giving back as needed (greedy)
a-z a single character in the range between a (index 97) and z (index 122) (case sensitive)
A-Z a single character in the range between A (index 65) and Z (index 90) (case sensitive)
 * matches the character   literally (case sensitive)
* Quantifier — Matches between zero and unlimited times, as many times as possible, giving back as needed (greedy)
Match a single character present in the list below [a-zA-Z]*
* Quantifier — Matches between zero and unlimited times, as many times as possible, giving back as needed (greedy)
a-z a single character in the range between a (index 97) and z (index 122) (case sensitive)
A-Z a single character in the range between A (index 65) and Z (index 90) (case sensitive)

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