package toss;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

public class Solution {

public static void main(String[] args) {

testTemplate("1만원", false);

testTemplate("10,000원", false);

testTemplate("+300", false);

testTemplate("0100", false);

testTemplate("39900", true);

testTemplate("25,000,123", true);

testTemplate("24,999,99", false);

testTemplate("10,000,", false);

testTemplate(",999,000", false);

}

public static void testTemplate(String number, boolean answer) {

boolean ret = solution(number);

if (ret == answer) {

System.out.println("정답 입니다!!");

} else {

System.out.println("오답 입니다!!");

}

}

public static boolean solution(String number) {

Pattern pattern = Pattern.compile("^(?!.*,{2})\\d{1,3}(,\\d{3})*$|^(\\d+)$");

Matcher matcher = pattern.matcher(number);

return matcher.find();

}

}