[BOJ] 15828 Router (S4)

Author: abcxj123

정건우/9주차/260223.java

@@ -0,0 +1,37 @@
+//https://www.acmicpc.net/problem/15828
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.ArrayDeque;
+import java.util.Queue;
+
+public class BOJ_S4_15828_Router {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+
+        int N = Integer.parseInt(br.readLine());
+        Queue<Integer> q = new ArrayDeque<>();
+
+        while (true) {
+            int packet = Integer.parseInt(br.readLine());
+
+            if(packet == -1) break;
+
+            if(packet == 0) q.poll();
+            else if(q.size() < N) q.add(packet);
+        }
+
+        if(q.isEmpty()) System.out.println("empty");
+        else {
+            StringBuilder sb = new StringBuilder();
+
+            while(!q.isEmpty()) {
+                sb.append(q.poll()).append(' ');
+            }
+
+            sb.setLength(sb.length()-1);
+            System.out.println(sb.toString());
+        }
+
+    }
+}