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Grokking the Coding Interview Patterns

Minimum Window Substring

Explore how to efficiently identify the minimum window substring that includes all characters of a target string within a source string. This lesson focuses on the sliding window technique, helping you understand substring problems and master pattern recognition for coding interviews.

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Statement

Given two strings, s and t, find the minimum window substring in s, which has the following properties:

  1. It is the shortest substring of s that includes all of the characters present in t.

  2. It must contain at least the same frequency of each character as in t.

  3. The order of the characters does not matter here.

Note: If there are multiple valid minimum window substrings, return any one of them. ...