Python | Leetcode Python题解之第463题岛屿的周长

题目：

题解：

class Solution:def islandPerimeter(self, grid: List[List[int]]) -> int:row=len(grid)col=len(grid[0])nums=0c=0grid=grid+[[0]*col]for i in range(row):grid[i].append(0)for j in range(col):if grid[i][j]==1:nums+=1if grid[i][j]==1 and grid[i+1][j]==1:c-=2if grid[i][j]==1 and grid[i][j+1]==1:c-=2c+=nums*4return c