feat : 백준 절댓값 힙

```
[절댓값 힙](https://www.acmicpc.net/problem/11286)
```

Author: seunggulee1007

src/main/java/sgyj/backjun/seunggu/Main11286.java

@@ -0,0 +1,52 @@
+package sgyj.backjun.seunggu;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.PriorityQueue;
+
+public class Main11286 {
+
+    public static void main(String[] args) {
+        try( BufferedReader reader = new BufferedReader(new InputStreamReader(System.in))) {
+            PriorityQueue<AbsNumber> queue = new PriorityQueue<>();
+            int count = Integer.parseInt(reader.readLine());
+            StringBuilder stringBuilder =new StringBuilder();
+            for(int i=0; i<count; i++) {
+                int num = Integer.parseInt(reader.readLine());
+                if(num == 0) {
+                    if(queue.isEmpty()) {
+                        stringBuilder.append(0);
+                    } else {
+                        stringBuilder.append(queue.poll().num);
+                    }
+                    stringBuilder.append("\n");
+                } else {
+                    queue.offer(AbsNumber.of(num));
+                }
+            }
+            System.out.println(stringBuilder);
+        }  catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    static class AbsNumber implements Comparable<AbsNumber> {
+        private final int num;
+
+        private AbsNumber(int num) {
+            this.num = num;
+        }
+
+        public static AbsNumber of(int num) {
+            return new AbsNumber(num);
+        }
+
+        @Override
+        public int compareTo(AbsNumber a) {
+            if(Math.abs(this.num) == Math.abs(a.num)) return this.num - a.num;
+            return Math.abs(this.num) - Math.abs(a.num);
+        }
+    }
+
+}