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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 pattern = "\\D+";
  13. 		System.out.println("1".replaceAll("^" + pattern + "|" + pattern + "$", "").split(pattern, 0).length);    // => 1
  14. 		System.out.println("1,2,3".replaceAll("^" + pattern + "|" + pattern + "$", "").split(pattern, 0).length);// => 3
  15. 		System.out.println("hz 1".replaceAll("^" + pattern + "|" + pattern + "$", "").split(pattern, 0).length); // => 1
  16. 		System.out.println("1 hz".replaceAll("^" + pattern + "|" + pattern + "$", "").split(pattern, 0).length); // => 1
  17. 		System.out.println("xxx 1 223 zzz".replaceAll("^" + pattern + "|" + pattern + "$", "").split(pattern, 0).length);//=>2
  18. 	}
  19.  
  20. }
Success #stdin #stdout 0.1s 320576KB
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stdin 
Standard input is empty
stdout 
1
3
1
1
2
https://ideone.com/luHaAs
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
secret

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