英文:
Regex - Find all the digits that occur to a certain character
问题
关于正则表达式，我想问你一下 - 我需要获取所有出现在特定字符之前的数字。例如：
"$z4~min.~00~s" -> 4"$z12~min.~00~s" -> 12
我只需要字符串中的第一个数字，不需要字符串中小数点后面的数字。
我在这个项目中使用Java。
你有什么建议吗？非常感谢。
英文:
I would like to ask you about regex expression - I need to get all numbers that occur to a certain character. For example:
"$z4~min.~00~s" -> 4"$z12~min.~00~s" -> 12
I simply need first number in the string, I don't need numbers after dot in the string.
I am using Java for this project.
Do you have any suggestions? Thanks a lot.
答案1
得分: 0
import java.util.regex.Pattern;import java.util.regex.Matcher;Pattern pattern = Pattern.compile("^\\D*(\\d+)");Matcher matcher = pattern.matcher("$z12~min.~00~s");if (matcher.find()) {String firstNumber = matcher.group(1);System.out.println(firstNumber);}
英文:
java.util.regex.Pattern pattern = java.util.regex.Pattern.compile("^\\D*(\\d+)");java.util.regex.Matcher matcher = pattern.matcher("$z12~min.~00~s");if (matcher.find()) {String firstNumber = matcher.group(1);System.out.println(firstNumber);}
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