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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. 	  String text = "Nothing right in my brain. Nothing left in my brain";
  13.  
  14. 	  int max = 4;
  15. 	  int min = 2;
  16.  
  17. 	  Random rand = new Random();
  18. 	  int randomNum = rand.nextInt((max - min) + 1) + min;
  19. //	  After split string into words:
  20.  
  21. 	  String[] words = text.split(" ");
  22. //	  Then, get 4 different numbers from 1 to words.length
  23.  
  24.   ArrayList<Integer> randomPositions = new ArrayList<Integer>(randomNum);
  25.   max = words.length;
  26.   min = 1;
  27.   for (int count = 0; count < randomNum; count ++) {
  28.      int random = rand.nextInt((max - min) + 1) + min;
  29.      if (randomPositions.contains(random)) count --;
  30.      else randomPositions.add(random);
  31.   }
  32. //	  Finally put \n in positions when rebuilding the array:
  33.  
  34. 	  StringBuilder result = new StringBuilder();
  35. 	  for (int count = 0; count < max; count ++) {
  36. 	      result.append(words[count]);
  37. 	      if (randomPositions.contains(count))
  38. 	          result.append("\n");
  39. 	      else
  40. 	          result.append(" ");
  41. 	  }
  42.  
  43.  
  44. 	  System.out.println(result);
  45. 	  }
  46. }
Success #stdin #stdout 0.1s 321280KB
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Standard input is empty
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Nothing right in my
brain. Nothing
left in my brain
https://ideone.com/IAJSZY
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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