可能重复的问题:
用空字符串替换所有非字母数字字符
import java.util.Scanner;
import java.util.regex.*;
public class io{
public static void main(String args[]){
Scanner scan = new Scanner(System.in);
String c;
if((c=scan.nextLine())!=null)
{
Pattern pt = Pattern.compile("[^a-zA-Z0-9]");
Matcher match= pt.matcher(c);
while(match.find()){
c=c.replace(Character.toString(c.charAt(match.start())),"");
}
System.out.println(c);
}
}
}
案例1
Input : hjdg$h&jk8^i0ssh6
Expect : hjdghjk8i0ssh6
Output : hjdgh&jk8^issh6
案例2
Input : hjdgh&jk8i0ssh6
Expect : hjdghjk8i0ssh6
Output : hjdghjk8i0ssh6
案例三
Input : hjdgh&j&k8i0ssh6
Expect : hjdghjk8i0ssh6
Output : hjdghjki0ssh6
请帮我找出代码逻辑的问题,谢谢!
[^a-z$]|[^A-Z$]|[^0-9$]
- noMAD