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PriprityQueueTest.java
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34 lines (26 loc) · 943 Bytes
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package Collection;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.PriorityQueue;
import java.util.Queue;
import org.eclipse.jdt.internal.compiler.ast.ThisReference;
import Chapter13ConnectionInterface.PriorityQueueTest;
public class PriprityQueueTest {
public static void printQueue(Queue queue){
while(queue.peek()!=null)
System.out.print(queue.remove()+" ");
System.out.println();
}
public static void main(String[] args) {
List<Integer> list=Arrays.asList(2,34,7,9,3,65,86,45,2);
PriorityQueue<Integer> priorityQueue=new PriorityQueue<>(list);
//为什么打印不一样？？？？？
System.out.println(priorityQueue);
PriprityQueueTest.printQueue(priorityQueue);
//倒序
PriorityQueue priorityQueue2=new PriorityQueue<>(list.size(), Collections.reverseOrder());
priorityQueue2.addAll(list);
PriprityQueueTest.printQueue(priorityQueue2);
}
}