Minimum Window Substring

Hash Tables

Sliding Windows

hard

Question(s)

Given an array of characters and a string, implement a function that finds the smallest substring containing all the characters in the array. Also seen as: Given two strings s and t of lengths m and n respectively, return the minimum window substring of s such that every character in t (including duplicates) is included in the window. If there is no such substring, return the empty string "".

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