HR자바 Java Regex

개요

HR자바 Java Regex

• https://www.hackerrank.com/challenges/java-regex/problem

해커랭크 Java

#	문제	비고
HR자바 Strings e
14	HR자바 Java Strings Introduction
15	HR자바 Java Substring
16	HR자바 Java Substring Comparisons
17	HR자바 Java String Reverse
18	HR자바 Java Anagrams
19	HR자바 Java String Tokens
20	HR자바 Pattern Syntax Checker
21	HR자바 Java Regex
22	HR자바 Java Regex 2 - Duplicate Words
23	HR자바 Valid Username Regular Expression
24	HR자바 Tag Content Extractor

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Java

Copy

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

class Solution{
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        while(in.hasNext()){
            String IP = in.next();
            System.out.println(IP.matches(new MyRegex().pattern));
        }
    }
}

Java

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//Write your code here
class MyRegex {
    String pattern = "\\b([01]?\\d{1,2}|2[0-4]\\d|25[0-5])\\."
        + "([01]?\\d{1,2}|2[0-4]\\d|25[0-5])\\."
        + "([01]?\\d{1,2}|2[0-4]\\d|25[0-5])\\."
        + "([01]?\\d{1,2}|2[0-4]\\d|25[0-5])\\b";
}