[nathan] 퍼즐조각 채우기 java 풀이 실패

nathan/java/src/main/java/org/example/mar/퍼즐조각채우기_0314.java

@@ -0,0 +1,110 @@
+package org.example.mar;
+
+import java.util.*;
+
+public class 퍼즐조각채우기_0314 {
+
+	int N;
+	int PN;
+	int[][] gameBoard;
+	int[][] d = new int[][]{{0, 1}, {0, -1}, {1, 0}, {-1, 0}};
+	List<List<Integer>> permutations = new ArrayList<>();
+	List<List<int[]>> places = new ArrayList<>();
+
+	public int solution(int[][] game_board, int[][] table) {
+		int answer = 0;
+
+		N = gameBoard.length;
+		gameBoard = new int[3*N-2][3*N-2];
+		for (int i = N; i < 2*N; i++) {
+			for (int j = N; j < 2*N; j++) {
+				gameBoard[i][j] = game_board[N-i][N-j];
+			}
+		}
+		// init(gameBoard, 0, places); // 빈 지역을 리스트에 추가
+		// PN = places.size(); // 빈지역 리스트의 원소 개수만큼 순열 만들기
+		// backTracking(new ArrayList<>(), new boolean[PN]);
+
+//
+//		for (int i = 0; i < 4; i++) {
+//			gameBoard = rotate(gameBoard);
+//			for (int i = 0; i < 3*N - 2; i++) {
+//				for (int j = 0; j < 3*N - 2; j++) {
+//
+//				}
+//			}
+//
+//		}
+
+
+
+		return answer;
+	}
+
+
+
+	int[][] rotate(int[][] table) {
+		int[][] newTable = new int[N][N];
+		for (int i = 0; i < N; i++) {
+			for (int j = 0; j < N; j++) {
+				newTable[j][N-1-i] = table[i][j];
+			}
+		}
+
+		return newTable;
+	}
+
+
+	void init(int[][] board, int diff, List<List<int[]>> arr) { // diff : board일 때 0, block일 때 1
+		boolean[][] visited = new boolean[N][N];
+		for (int i = 0; i < N; i++) {
+			for (int j = 0; j < N; j++) {
+				if (board[i][j] == diff && !visited[i][j]) {
+					List<int[]> place = new ArrayList<>();
+					visited[i][j] = true;
+					place.add(new int[]{i, j});
+					diff += 1;
+					diff %= 2;
+					dfs(i, j, place, board, diff, visited);
+					arr.add(place);
+				}
+			}
+		}
+	}
+
+	void dfs(int x, int y, List<int[]> place, int[][] board, int diff, boolean[][] visited) {
+		int nx, ny;
+		for (int i = 0; i < 4; i++) {
+			nx = x + d[i][0];
+			ny = y + d[i][1];
+			if (checkRange(nx, ny)) {
+				if (board[nx][ny] == diff && !visited[nx][ny]) {
+					visited[nx][ny] = true;
+					place.add(new int[]{nx, ny});
+					dfs(nx, ny, place, board, diff, visited);
+				}
+			}
+		}
+	}
+
+	boolean checkRange(int x, int y) {
+		return 0 <= x && x < N && 0 <= y && y < N;
+	}
+
+	void backTracking(List<Integer> arr, boolean[] visited) {
+		if (arr.size() == PN) {
+			permutations.add(arr);
+			return;
+		}
+
+		for (int i = 0; i < PN; i++) {
+			if (!visited[i]) {
+				visited[i] = true;
+				List<Integer> tmp = new ArrayList<>(arr);
+				tmp.add(i);
+				backTracking(tmp, visited);
+				visited[i] = false;
+			}
+		}
+	}
+}