developer-roadmap/roadmaps/leetcode/content/minimum-window-substring@P7scdQHmNUPA6UI36yBtL.md

Minimum Window Substring

Given strings s and t, find the smallest substring of s that contains all characters of t. You expand the right pointer until you have a valid window, then shrink from the left as much as possible while keeping it valid. This is one of the hardest sliding window problems and teaches you to manage a character frequency map as the window changes.

Visit the following resources to learn more:

• @article@Minimum Window Substring
• @video@Leetcode - Minimum Window Substring (Python)
• @video@L12. Minimum Window Substring