#Arrays

Given an array of integers, find the smallest subarray that contains both the minimum and maximum elements. The solution's efficiency is essential. For reference, check the problem [here](https://lnkd.in/gSkZsCga).

Resolve an array-based medium-level coding question that requires you to implement an optimized solution. Provide your approach and reasoning.

Explain a problem that utilizes the sliding window technique to find a specific value or condition within an array.

Solve a problem that involves the calculation of prefix sums in an array.

Given an array of integers representing the heights of barriers, compute how much water can be trapped after raining. You need to provide an optimized approach that performs better than O(n^2).