pass 211 77 433

2024-06-02 21:23:00 +02:00
parent 75690d88f7
commit 641f712a20
4 changed files with 147 additions and 0 deletions
--- a/130-240602-pass/main.py
+++ b/130-240602-pass/main.py
@@ -0,0 +1,63 @@
+class Solution:
+    def solve(self, board: List[List[str]]) -> None:
+        """
+        Do not return anything, modify board in-place instead.
+        """
+        que = []
+        front = -1
+        tail = -1
+
+        def push_back(que, front, tail, ele):
+            lq = len(que)
+            tail += 1
+            if lq <= tail:
+                que.append(ele)
+            else:
+                que[tail] = ele
+            return tail
+        def pop(que, front, tail):
+            front += 1
+            return (que[front], front)
+        d = [(1,0),(-1,0),(0,1),(0,-1)]
+        height = len(board)
+        width = len(board[0])
+        def is_valid(x, y):
+            if x<0 or y < 0 or x >= height or y >= width:
+                return False
+            return True
+        is_visited = []
+        for x, l in enumerate(board):
+            is_visited.append([])
+            for y in l:
+                is_visited[x].append(0)
+        if height < 3 or width < 3:
+            return board
+        def is_edge(x, y):
+            if x == 0 or y == 0 or x == height - 1 or y == width - 1:
+                return True
+            return False
+        for x in range(1,height - 1):
+            for y in range(1,width - 1):
+                if board[x][y] == 'X' or is_visited[x][y] == 1: continue
+                tail = push_back(que,front, tail,(x,y))
+                flag = 0
+                last_front = front
+                while front != tail:
+                    (top_ele, front) = pop(que, front, tail)
+                    for (cx, cy) in d:
+                        nx = cx + top_ele[0]
+                        ny = cy + top_ele[1]
+                        if is_edge(nx, ny):
+                            if board[nx][ny] == 'O': 
+                                flag = 1
+                            continue
+                        if board[nx][ny] == 'O' and is_visited[nx][ny]==0:
+                            tail = push_back(que,front,tail,(nx,ny))
+                            is_visited[nx][ny]=1
+                if flag == 0:
+                    for idx in range(last_front + 1, front + 1):
+                        xx = que[idx][0]
+                        yy = que[idx][1]
+                        board[xx][yy]='X'
+        return board
+