[20250712] BOJ / G5 / 숏코딩의 왕 브실이 / 이종환

0224LJH/202507/12 BOJ 숏코딩의 왕 브실이.md

@@ -0,0 +1,63 @@
+```java
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.StringTokenizer;
+
+public class Main {
+    static int len,maxRemoveCnt, ans;
+    static int[] arr,minArr,maxArr;
+
+    public static void main(String[] args) throws IOException {
+        init();
+        process();
+        print();
+    }
+
+    private static void init() throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        len = Integer.parseInt(st.nextToken());
+        maxRemoveCnt = Integer.parseInt(st.nextToken());
+        arr = new int[len];
+        ans = Integer.MIN_VALUE;
+        st = new StringTokenizer(br.readLine());
+        for (int i = 0; i < len; i++) {
+            arr[i] = Integer.parseInt(st.nextToken());
+        }
+
+    }
+
+    private static void process() {
+        getMinAndMaxArr();
+        for (int i = 0; i <= maxRemoveCnt; i++) {
+            int end = (len-1) -  i;
+            int start = maxRemoveCnt - i;
+
+            ans = Math.max(maxArr[end] - arr[start], ans);
+        }
+    }
+
+    private static void getMinAndMaxArr() {
+        minArr = new int[len]; // 0~i번까지의 숫자중 최솟값
+        maxArr = new int[len]; // len-1 ~ len-1-i번까지의 숫자 중 최댓값
+
+        minArr[0] = arr[0];
+        for (int i = 1; i < len; i++) {
+            minArr[i] = Math.min(minArr[i-1], arr[i]);
+        }
+        maxArr[len-1] = arr[len-1];
+        for (int i = len-2; i >= 0; i--) {
+            maxArr[i] = Math.max(maxArr[i+1], arr[i]);
+        }
+    }
+
+    private static void print()  {
+        System.out.println(ans);
+    }
+
+
+
+}
+```