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Learn Data Structures and Algorithms in Go

Problem: Minimum Window Substring

Explore how to implement the minimum window substring solution using a sliding window and two-pointer approach. Learn to track character frequencies and optimize the search to run in O(m + n) time, enhancing your understanding of string manipulation and algorithm efficiency.

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Statement

Given two strings s and t of lengths m and n, respectively, find the minimum window substring of s that contains every character in t, including duplicate characters. If no such substring exists, return an empty string "".

The test cases are generated such that the answer is always unique.

Note: Can you find an algorithm that runs in O(m+n)O(m + n) time?

Constraints:

  • m ==== s.length

  • n ==== t.length

  • 1≤1 \leq m, n ≤105\leq 10^5 ...