Package g0801_0900.s0892_surface_area_of_3d_shapes

Class Solution

java.lang.Object
g0801_0900.s0892_surface_area_of_3d_shapes.Solution
public class Solution extends Object
892 - Surface Area of 3D Shapes.

Easy

You are given an n x n grid where you have placed some 1 x 1 x 1 cubes. Each value v = grid[i][j] represents a tower of v cubes placed on top of cell (i, j).

After placing these cubes, you have decided to glue any directly adjacent cubes to each other, forming several irregular 3D shapes.

Return the total surface area of the resulting shapes.

Note: The bottom face of each shape counts toward its surface area.

Example 1:

Input: grid = [[1,2],[3,4]]

Output: 34

Example 2:

Input: grid = [[1,1,1],[1,0,1],[1,1,1]]

Output: 32

Example 3:

Input: grid = [[2,2,2],[2,1,2],[2,2,2]]

Output: 46

Constraints:

  • n == grid.length == grid[i].length
  • 1 <= n <= 50
  • 0 <= grid[i][j] <= 50

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • surfaceArea

      public int surfaceArea(int[][] grid)