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Dec 9th, 2018
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  1. package stringAndTextProcessing;
  2.  
  3. import java.util.ArrayList;
  4. import java.util.List;
  5. import java.util.Scanner;
  6. import java.util.TreeSet;
  7.  
  8. public class palindromes {
  9. public static void main(String[] args) {
  10. Scanner scanner = new Scanner(System.in);
  11. String text = scanner.nextLine();
  12.  
  13. String textReversed = "";
  14. for (int i = text.length() - 1; i >= 0; i--) {
  15. textReversed += text.charAt(i);
  16. }
  17.  
  18. String[] firstCompare = text.split("[^A-za-z0-9]+");
  19. String[] secondCompare = textReversed.split("[^A-za-z0-9]+");
  20.  
  21. TreeSet<String> result = new TreeSet<>();
  22. for (int i = 0; i < firstCompare.length; i++) {
  23. for (int j = 0; j < secondCompare.length; j++) {
  24. if (firstCompare[i].equals((secondCompare[j]))) {
  25. result.add(secondCompare[j]);
  26. }
  27. }
  28. }
  29.  
  30. System.out.println(result);
  31.  
  32. }
  33. }
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