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import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Test{
public static void main(String[] args){
String content = "-3.2a+4.5c/3-4c*3d";
String regex = "-?\\d+[.]?\\d*[A-Za-z]*([-+*/]\\d+[.]?\\d*[A-Za-z]*)+";//字母是否必须是最后??
Matcher matcher = Pattern.compile(regex).matcher(content);
System.out.println(matcher.matches());
}
}