Java Collection, PriorityQueue Exercises: Remove all the elements from a priority queue
Java Collection, PriorityQueue Exercises: Exercise-5 with Solution
Write a Java program to remove all the elements from a priority queue.
Sample Solution:-
Java Code:
import java.util.*;
public class Example5 {
public static void main(String[] args) {
// Create Priority Queue
PriorityQueue<String> pq1 = new PriorityQueue<String>();
// use add() method to add values in the Priority Queue
pq1.add("Red");
pq1.add("Green");
pq1.add("Black");
pq1.add("White");
System.out.println("Original Priority Queue: "+pq1);
// Removing all the elements from the Priority Queue
pq1.clear();
System.out.println("The New Priority Queue: " + pq1);
}
}
Sample Output:
Original Priority Queue: [Black, Red, Green, White] The New Priority Queue: []
Java Code Editor:
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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())); }
Ref: https://bit.ly/3xXcFZt
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