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2.java
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23 lines (19 loc) · 533 Bytes
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import java.util.*;
public class Main {
public static void main(String[] args) {
Queue<Integer> q = new LinkedList<>();
// 삽입(5) - 삽입(2) - 삽입(3) - 삽입(7) - 삭제() - 삽입(1) - 삽입(4) - 삭제()
q.offer(5);
q.offer(2);
q.offer(3);
q.offer(7);
q.poll();
q.offer(1);
q.offer(4);
q.poll();
// 먼저 들어온 원소부터 추출
while (!q.isEmpty()) {
System.out.println(q.poll());
}
}
}