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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.util.regex.*;
  4.  
  5. class Main
  6. {
  7.     public static void main (String[] args) throws java.lang.Exception
  8.     {
  9.         String number = "89371477777"; 
  10.         Pattern p = Pattern.compile("(\\d)\\1{3}"); 
  11.         Matcher m = p.matcher(number); 
  12.         if (m.find()) { 
  13.             System.out.println("Найдено"); 
  14.         }
  15.     }
  16. }
Success #stdin #stdout 0.07s 380160KB
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Standard input is empty
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Найдено
https://ideone.com/sjv9NE
language:
Java (12.0.1)
created:
10 years ago
visibility:
public

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