Rain Water Trapping
Hard

Problem Statement

Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap after raining.

Examples

1Example 1
Input:
{ "height": [ 0, 1, 0, 2, 1, 0, 1, 3, 2, 1, 2, 1 ] }
Output:
6
2Example 2
Input:
{ "height": [ 4, 2, 0, 3, 2, 5 ] }
Output:
9
3Example 3
Input:
{ "height": [ 1, 2, 3, 4, 5 ] }
Output:
0
Loading...

Sign in to Run Code and Submit