Watch tutorials and explanations by expert teachers that walk through solving this problem.
Top SWE
Developer Docs
Deepti Talesra
Mastering Programming
HackerHeap
coding interview questions
Professor Oakes
StatLearn Tech
Programming Rush
Solve more problems to master this pattern
![[[Leetcode]] trapping rain water - Java](https://i.ytimg.com/vi/izWKHpt1Vpo/hq720.jpg?sqp=-oaymwEXCNAFEJQDSFryq4qpAwkIARUAAIhCGAE=&rs=AOn4CLACLxfESZW7em3H6ixSYuH9jbkcaA)
