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Java Exercises

Java Collection, TreeSet Exercises: Create a reverse order view of the elements contained in a given tree set

Java Collection, TreeSet Exercises: Exercise-4 with Solution

Write a Java program to create a reverse order view of the elements contained in a given tree set.

Sample Solution:

Java Code:

import java.util.TreeSet;
import java.util.Iterator;
  public class Exercise4 {
  public static void main(String[] args) {
    // create an empty tree set
     TreeSet<String> t_set = new TreeSet<String>();
   // use add() method to add values in the tree set
          t_set.add("Red");
          t_set.add("Green");
          t_set.add("Black");
          t_set.add("Pink");
          t_set.add("orange");
     // print original list
   System.out.println("Original tree set:" + t_set);  
     Iterator it = t_set.descendingIterator();
     // Print list elements in reverse order
     System.out.println("Elements in Reverse Order:");
     while (it.hasNext()) {
        System.out.println(it.next());
     }
  }
}

Sample Output:

Original tree set:[Black, Green, Pink, Red, orange]                    
Elements in Reverse Order:                                             
orange                                                                 
Red                                                                    
Pink                                                                   
Green                                                                  
Black

Flowchart:

Flowchart: Create a reverse order view of the elements contained in a given tree set

Java Code Editor:

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