java - 使用正则表达式从字符串中拆分数字

Question

我想从 masterArray 中的字母中拆分数字并将它们存储在单独的 ArrayList 中(splitInteger, splitString)。目前，我在 splitInteger ArrayList 中有数字，但是 splitString ArrayList 中的字母没有正确分隔。

splitString ArrayList 有多余的空格、逗号，ArrayList 中元素的顺序不正确。

输出应该是这样的:

[55CC, 1C, 255D, 0F]
[55, 1, 255, 0]
[CC, C, D, F]

目前输出如下:

[55CC, 1C, 255D, 0F]
[55, 1, 255, 0]
[, CC, , C, , D, , F]

我尝试弄乱我的 removeNumbers 变量的正则表达式，但对正则表达式知之甚少。

import java.util.ArrayList;

public class SplitArrayExample {

public static void main(String[] args) 
{
    int convertValue = 0;

    // Using Regular Expressions to remove Characters 
    String removeLetters = "([A-z]+)";
    String removeNumbers = "([0-9]+)";

    // This is the master list.
    ArrayList<String> masterArray = new ArrayList<String>();
        masterArray.add("55CC");
        masterArray.add("1C");
        masterArray.add("255D");
        masterArray.add("0F");

    // These are used to split the integer and string characters
    ArrayList<Integer> splitInteger = new ArrayList<Integer>();
    ArrayList<String> splitString = new ArrayList<String>();

    for (String element : masterArray)
    {
        // Used to split the strings
        String[] removingLetterCharacters = element.split(removeLetters);
        String[] removingNumberCharacters = element.split(removeNumbers);

        // This for-each loop removes letter values and converts numbers to integer values
        for(String addObject : removingLetterCharacters)
        {
            convertValue = Integer.parseInt(addObject);
            splitInteger.add(convertValue); 
        }

        // This for-each loop removes the integer values
        for(String addObject : removingNumberCharacters)
        {
            splitString.add(addObject);
        }
    }

    System.out.println(masterArray);
    System.out.println(splitInteger);


    System.out.println(splitString);
    }
}

Answer 1

尝试使用 replaceAll String 的方法，因此它会从您的 String 中删除所有字符或数字，例如:

String removeLetters = "([A-Z]+)";//you have typo here note capital Z
for (String element : masterArray) {
    String removingLetterCharacters = element.replaceAll(removeLetters, "");
    String removingNumberCharacters = element.replaceAll(removeNumbers, "");
    convertValue = Integer.parseInt(removingLetterCharacters);
    splitInteger.add(convertValue);
    splitString.add(removingNumberCharacters);
}

Output:
[55CC, 1C, 255D, 0F]
[55, 1, 255, 0]
[CC, C, D, F]