Package g0401_0500.s0407_trapping_rain_water_ii

Class Solution

java.lang.Object

g0401_0500.s0407_trapping_rain_water_ii.Solution

public class Solution
extends Object

407 - Trapping Rain Water II\. Hard Given an `m x n` integer matrix `heightMap` representing the height of each unit cell in a 2D elevation map, return _the volume of water it can trap after raining_. **Example 1:**  **Input:** heightMap = \[\[1,4,3,1,3,2],[3,2,1,3,2,4],[2,3,3,2,3,1]] **Output:** 4 **Explanation:** After the rain, water is trapped between the blocks. We have two small ponds 1 and 3 units trapped. The total volume of water trapped is 4. **Example 2:**  **Input:** heightMap = \[\[3,3,3,3,3],[3,2,2,2,3],[3,2,1,2,3],[3,2,2,2,3],[3,3,3,3,3]] **Output:** 10 **Constraints:** * `m == heightMap.length` * `n == heightMap[i].length` * `1 <= m, n <= 200` * 0 <= heightMap[i][j] <= 2 * 104

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	trapRainWater(int[][] heightMap)

Methods inherited from class java.lang.Object

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

Constructor Details

Solution

public Solution()

Method Details

trapRainWater

public int trapRainWater(int[][] heightMap)