Rainwater harvesting problem

#1

i dont understand the two pointer approach to solve this problem. the most optimised algorithm
kindly explain

#2

hello @mkidwai74
check this article -> 2 pointer
they have explained the 2 pointer algorithm using animation video so that might help u .
I recommend u to read all three approaches before approach 4 because approach 4 depends on all those approaches.

if u still face any issue in understanding the alogorithm then feel free to ask

#3

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