单选题import java.util.*; public class PQ { public static void main(String[] args) { PriorityQueue pq = new PriorityQueue(); pq.add(”carrot”); pq.add(”apple”); pq.add(”banana”); System.out.println(pq.poll() +”:” + pq.peek()); } } What is the result?()A apple:appleB carrot:appleC apple:bananaD banana:appleE carrot:carrotF carrot:banana
单选题
import java.util.*; public class PQ { public static void main(String[] args) { PriorityQueue pq = new PriorityQueue(); pq.add(”carrot”); pq.add(”apple”); pq.add(”banana”); System.out.println(pq.poll() +”:” + pq.peek()); } } What is the result?()
A
apple:apple
B
carrot:apple
C
apple:banana
D
banana:apple
E
carrot:carrot
F
carrot:banana
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