leetcode999

 class Solution:
     def numRookCaptures(self, board: 'List[List[str]]') -> int:
         basei = 0
         basej = 0
         row = len(board)
         coloum = len(board[0])

         for i in range(row):
             for j in range(coloum):
                 if board[i][j] == 'R':
                     basei=i
                     basej=j
                     break
         count = 0
         for up in range(basei-1,-1,-1):
             if board[up][basej]=='B':
                 break
             if board[up][basej]=='p':
                 count+=1
                 break
         for down in range(basei+1,row):
             if board[down][basej]=='B':
                 break
             if board[down][basej]=='p':
                 count+=1
                 break
         for left in range(basej-1,-1,-1):
             if board[basei][left]=='B':
                 break
             if board[basei][left]=='p':
                 count+=1
                 break
         for right in range(basej+1,coloum):
             if board[basei][right]=='B':
                 break
             if board[basei][right]=='p':
                 count+=1
                 break
         return count