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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.  
  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. 		test("hello's");
  13. 		test(";;;1235'5454!!");
  14. 		test(";;;1235'L454!!'");
  15. 	}
  16.  
  17. 	static void test(String input) {
  18. 		String regex = regex(input);
  19. 		String replaceInBetween = replaceInBetween(input);
  20. 		System.out.println("regex: " + regex);
  21. 		System.out.println("rib:   " + replaceInBetween);
  22. 		System.out.println(regex.equals(replaceInBetween));
  23. 	}
  24.  
  25. 	static String regex(String substr) {
  26. 		substr = substr.replaceAll("([^\\p{L}\\p{N}\\p{Mn}_\\-<>'])"," $1 ");
  27.     	substr = substr.replaceAll("([\\p{N}\\p{L}])'(\\p{L})", "$1 '$2");
  28.     	substr = substr.replaceAll("([^\\p{L}])'([^\\p{L}])", "$1 ' $2");
  29.     	return substr;
  30. 	}
  31.  
  32. 	static String replaceInBetween(String str) {
  33. 		StringBuilder sb = new StringBuilder();
  34. 		appendInBetween(sb, str, 0, str.length());
  35. 		return sb.toString();
  36. 	}
  37.  
  38. static void appendInBetween(StringBuilder resultStr, String s, int start, int end) {
  39.   for (int i = start; i < end; ++i) {
  40.     char c = s.charAt(i);
  41.  
  42.     // Check if c matches "([^\\p{L}\\p{N}\\p{Mn}_\\-<>'])".
  43.     if (!(Character.isLetter(c)
  44.           || Character.isDigit(c)
  45.           || Character.getType(c) == Character.NON_SPACING_MARK
  46.           || "_\\-<>'".indexOf(c) != -1)) {
  47.       resultStr.append(' ');
  48.       resultStr.append(c);
  49.       resultStr.append(' ');
  50.     } else if (c == '\'' && i > 0 && i + 1 < s.length()) {
  51.       // We have a quote that's not at the beginning or end.
  52.  
  53.       char b = s.charAt(i - 1);
  54.       char d = s.charAt(i + 1);
  55.  
  56.       if ((Character.isDigit(b) || Character.isLetter(b)) && Character.isLetter(d)) {
  57.         // If the 3 chars match "([\\p{N}\\p{L}])'(\\p{L})"
  58.         resultStr.append(' ');
  59.         resultStr.append(c);
  60.       } else if (!Character.isLetter(b) && !Character.isLetter(d)) {
  61.         // If the 3 chars match "([^\\p{L}])'([^\\p{L}])"
  62.         resultStr.append(' ');
  63.         resultStr.append(c);
  64.         resultStr.append(' ');
  65.       } else {
  66.         resultStr.append(c);
  67.       }
  68.     } else {
  69.       // Everything else, just append.
  70.       resultStr.append(c);
  71.     }
  72.   }
  73. }
  74. }
Success #stdin #stdout 0.04s 4386816KB
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stdin
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Standard input is empty
stdout
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regex: hello 's
rib:   hello 's
true
regex:  ;  ;  ; 1235 ' 5454 !  ! 
rib:    ;  ;  ; 1235 ' 5454 !  ! 
true
regex:  ;  ;  ; 1235 'L454 !  ! '
rib:    ;  ;  ; 1235 'L454 !  ! '
true
https://ideone.com/dhqFqC
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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