28 lines
738 B
Java
28 lines
738 B
Java
// Author: Rodney Shaghoulian
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// Github: github.com/RodneyShag
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// HackerRank: hackerrank.com/RodneyShag
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import java.util.Scanner;
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class Solution {
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public static void main(String []args) {
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Scanner in = new Scanner(System.in);
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while(in.hasNext()) {
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String IP = in.next();
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System.out.println(IP.matches(new MyRegex().pattern));
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}
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}
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}
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/*
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[01]?\\d{1,2} matches numbers 0-199.
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2[0-4]\\d matches numbers 200-249
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25[0-5] matches numbers 250-255
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*/
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class MyRegex {
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String num = "([01]?\\d{1,2}|2[0-4]\\d|25[0-5])";
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String pattern = num + "." + num + "." + num + "." + num;
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}
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