CT_344

BOJ/Java/src/S2/Boj_30804_과일탕후루.java

@@ -0,0 +1,41 @@
+package S2;
+
+import java.io.*;
+import java.util.StringTokenizer;
+
+public class Boj_30804_과일탕후루 {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+
+        int N = Integer.parseInt(br.readLine());
+        int[] arr = new int[N];
+
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        for (int i = 0; i < N; i++) {
+            arr[i] = Integer.parseInt(st.nextToken());
+        }
+
+        int[] cntList = new int[10];
+        int max = 0;
+        int nowCnt = 0;
+        int start = 0;
+
+        for (int end = 0; end < N; end++) {
+            if (++cntList[arr[end]] == 1) {
+                if (++nowCnt > 2) {
+                    max = Math.max(max, end - start);
+                    while (start <= end) {
+                        if (--cntList[arr[start++]] == 0) nowCnt--;
+                        if (nowCnt <= 2) break;
+                    }
+                }
+            }
+        }
+
+        max = Math.max(max, N - start);
+
+        bw.write(Integer.toString(max));
+        bw.flush();
+    }
+}