Best Time to Buy and Sell Stock (LeetCode

Описание: In this video, I solve the classic "Best Time to Buy and Sell Stock" problem from LeetCode using Swift. I break down why this is a perfect sliding window problem and why tracking the minimum price seen so far is the key to solving it efficiently. Watch as I take you from a brute force O(n²) solution to an optimized O(n) one-pass algorithm that would impress any interviewer.
📌 What You'll Learn:

What sliding window technique is and why it's perfect for this stock problem
How to avoid the inefficient nested loop approach many beginners try first
The elegant one-pass solution that tracks minimum price and maximum profit simultaneously
Why you should think of buying at the "valley" and selling at the "peak"
How to handle edge cases like decreasing price arrays
Time & space complexity analysis explained in simple terms

#Swift #LeetCode #SlidingWindow #StockProblem #CodingInterview #iOSDevelopment #AlgorithmOptimization #DSA