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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import java.util.regex.*;
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		String rx = "[\\(]?\\d{3}[\\)]?([-.]?)\\s*\\d{3}\\1\\s*\\d{4}";
  13. 		System.out.println(getMatch("(123).123.1234", rx));
  14. 		System.out.println(getMatch("1234567890", rx));
  15. 		System.out.println(getMatch("(123)1231234", rx));
  16. 		System.out.println(getMatch("(123)-456-7890", rx));
  17. 		System.out.println(getMatch("(123) 123 1234", rx));
  18. 		System.out.println(getMatch("123   123    1234", rx));
  19. 		System.out.println(getMatch("(123). 456. 7890", rx));
  20. 		System.out.println(getMatch("(123)- 456- 7890", rx));
  21. 		// FALSE
  22. 		System.out.println(getMatch("123.123-1234", rx));
  23. 		System.out.println(getMatch("(123)-123.1234", rx));
  24. 		System.out.println(getMatch("123.  123-  1234 ", rx));
  25.     }
  26.     public static String getMatch(String str, String pattern)
  27.     {
  28.         Pattern ptrn = Pattern.compile(pattern);
  29.         Matcher m = ptrn.matcher(str);
  30.         if (m.find()) {
  31.            return m.group();
  32.         }
  33.         else {
  34.            return "";
  35.         }
  36.     }
  37. }
Success #stdin #stdout 0.1s 320256KB
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stdin
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Standard input is empty
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(123).123.1234
1234567890
(123)1231234
(123)-456-7890
(123) 123 1234
123   123    1234
(123). 456. 7890
(123)- 456- 7890
https://ideone.com/cE6bx4
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
secret

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