Trapping Rain Water
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.
Trapping Rain Water

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.

Example 1:
Input: [0,1,0,2,1,0,1,3,2,1,2,1]
Output: 6
Input
arr =[0,1,0,2,1,0,1,3,2,1,2,1]
0
L
1
0
2
1
0
1
3
2
1
2
1
R
Left Max
0
Right Max
1
Total Water

0

Variables
No variables to display
DepthFunction Call
Stack empty
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