#
# 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可
#
# 判断岛屿数量
# @param grid char字符型二维数组
# @return int整型
#
class Solution:
def solve(self , grid: List[List[str]]) -> int:
# write code here
if not grid or not grid[0]:
return 0
m,n = len(grid),len(grid[0])
res = 0
for i in range(m):
for j in range(n):
if grid[i][j] == '1':
res += 1
self.dfs(grid,i,j)
return res
def dfs(self,grid,i,j):
if i<0 or i>=len(grid) or j<0 or j>=len(grid[0]) or grid[i][j]=='0':
return
grid[i][j] = '0'
self.dfs(grid,i-1,j)
self.dfs(grid,i+1,j)
self.dfs(grid,i,j-1)
self.dfs(grid,i,j+1)