package chat.tools;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Utils {
    public static String getRandomCode(int length) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < length; i++) {
            sb.append(((int)(Math.random()*100))%10);
        }
        return sb.toString();
    }
    public static boolean isMobile(String mobile) {
        boolean flag = false;
        try {
            Pattern p = Pattern.compile("^(1[3-9][0-9])\\d{8}$");
            Matcher m = p.matcher(mobile);
            flag = m.matches();
        } catch (Exception e) {
            flag = false;
        }
        return flag;
    }

}