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Shuffle elements of Java Vector example

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  1. /*
  2.   Shuffle elements of Java Vector example
  3.   This java example shows how to shuffle elements of Java Vector object using
  4.   shuffle method of Collections class.
  5. */
  6.  
  7. import java.util.Vector;
  8. import java.util.Collections;
  9.  
  10. public class ShuffleElementsOfVectorExample {
  11.  
  12.   public static void main(String[] args) {
  13.    
  14.     //create a Vector object
  15.     Vector v = new Vector();
  16.    
  17.     //Add elements to Vector
  18.     v.add("1");
  19.     v.add("2");
  20.     v.add("3");
  21.     v.add("4");
  22.     v.add("5");
  23.    
  24.     System.out.println("Before shuffling, Vector contains : " + v);
  25.    
  26.     /*
  27.       To shuffle elements of Java Vector use,
  28.       static void shuffle(List list) method of Collections class.
  29.     */
  30.    
  31.     Collections.shuffle(v);
  32.    
  33.     System.out.println("After shuffling, Vector contains : " + v);
  34.    
  35.   }
  36. }
  37.  
  38. /*
  39. Output would be
  40. Before shuffling, Vector contains : [1, 2, 3, 4, 5]
  41. After shuffling, Vector contains : [4, 3, 2, 1, 5]
  42. */