16. Trapping Rain Water || Left & Right Auxiliary Arrays || Top 150+ DSA Leetcode Coding JAVA

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.
The goal is to calculate how much water can be trapped between the bars based on their heights.
Water can only be trapped at a particular index if there are higher bars on both its left and right sides.
So, To efficiently determine the maximum elevation to the left and right of each bar, we'll use two arrays:
left[i]: This array will store the maximum height encountered from the start up to the current index i.
right[i]: This array will store the maximum height encountered from the end up to the current index i.
Watch till end to clearly understand the approach
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[@coder4]

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[@itsruntym]

Sureee, checkout 2 ques out … thankss 🙌