[20251128] BOJ / G4 / 중복 제거 / 이종환

0224LJH/202511/28 BOJ 중복 제거.md

@@ -0,0 +1,48 @@
+```java
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.StringTokenizer;
+
+public class Main {
+
+	static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+	static List<Integer> list = new ArrayList<>();
+	static StringBuilder sb = new StringBuilder();
+
+    public static void main(String[] args) throws IOException {
+
+        init();
+        process();
+    	print();
+
+    }
+
+    private static void init() throws IOException{
+    	StringTokenizer st = new StringTokenizer(br.readLine());
+    	while(st.hasMoreTokens()) {
+    		list.add(Integer.parseInt(st.nextToken()));
+    	}
+
+    }
+
+    private static void process() throws IOException {
+    	HashSet<Integer> set = new HashSet<>();
+    	for (int n: list) {
+    		if (set.contains(n)) continue;
+    		sb.append(n).append(" ");
+    		set.add(n);
+    	}
+    }
+
+	private static void print() {
+		System.out.println(sb.toString());
+    }
+
+}
+```