Java Collection, LinkedList Exercises: Iterate a linked list in reverse order.
Java Collection, LinkedList Exercises: Exercise-4 with Solution
Write a Java program to iterate a linked list in reverse order.
Sample Solution:-
Java Code:
import java.util.LinkedList;
import java.util.Iterator;
public class Exercise4 {
public static void main(String[] args) {
// create an empty linked list
LinkedList<String> l_list = new LinkedList<String>();
// use add() method to add values in the linked list
l_list.add("Red");
l_list.add("Green");
l_list.add("Black");
l_list.add("Pink");
l_list.add("orange");
// print original list
System.out.println("Original linked list:" + l_list);
Iterator it = l_list.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 linked list:[Red, Green, Black, Pink, orange] Elements in Reverse Order: orange Pink Black Green Red
Pictorial Presentation:
Flowchart:

Java Code Editor:
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Previous: Iterate through all elements in a linked list starting at the specified position.
Next: Insert the specified element at the specified position in the linked list.
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Java: Tips of the Day
getEnumMap
Converts to enum to Map where key is the name and value is Enum itself.
public static <E extends Enum<E>> Map<String, E> getEnumMap(final Class<E> enumClass) { return Arrays.stream(enumClass.getEnumConstants()) .collect(Collectors.toMap(Enum::name, Function.identity())); }
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