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 Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	surfaceArea(int[][] grid)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

surfaceArea

public int surfaceArea(int[][] grid)