[Ader] BOJ(16926): 배열돌리기1 - 문제풀이

src/아더/BOJ_16926_배열돌리기.java

@@ -0,0 +1,75 @@
+package 아더;
+
+import java.io.*;
+
+public class BOJ_16926_배열돌리기 {
+
+    static int N, M, R, layer;
+    static int[][] adj, dir = {{1, 0}, {0, 1}, {-1, 0}, {0, -1}};
+
+    public static void main(String[] args) {
+        try {
+            input();
+            solve();
+            print();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private static void print() {
+        for (int i = 0; i < N; i++) {
+            for (int j = 0; j < M; j++) {
+                System.out.print(adj[i][j] + " ");
+            }
+            System.out.println();
+        }
+    }
+
+    private static void solve() {
+        rotate(R);
+    }
+
+    private static void rotate(int rotateNum) {
+        for (int i = 0; i < rotateNum; i++) {
+            for (int n = 0; n < layer; n++) {
+                int tmp = adj[n][n];
+                int edgeCnt = 0;
+                int lx = n, ly = n;
+
+                while (edgeCnt < 4) {
+                    int ny = ly + dir[edgeCnt][1];
+                    int nx = lx + dir[edgeCnt][0];
+
+                    if (ny >= n && nx >= n && ny < N - n && nx < M - n) {
+                        adj[ly][lx] = adj[ny][nx];
+                        ly = ny;
+                        lx = nx;
+                    } else {
+                        edgeCnt++;
+                    }
+                }
+                adj[n + 1][n] = tmp;
+            }
+        }
+    }
+
+    private static void input() throws IOException {
+        //BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        BufferedReader br = new BufferedReader(new FileReader(new File("/Users/woo-jinpark/Desktop/Park/05_Test/input/input.txt")));
+
+        String[] split = br.readLine().split(" ");
+        N = Integer.parseInt(split[0]);
+        M = Integer.parseInt(split[1]);
+        R = Integer.parseInt(split[2]);
+        layer = Math.min(N, M) / 2;
+        adj = new int[N][M];
+
+        for (int i = 0; i < N; i++) {
+            split = br.readLine().split(" ");
+            for (int j = 0; j < M; j++) {
+                adj[i][j] = Integer.parseInt(split[j]);
+            }
+        }
+    }
+}