• Home
• com.github.javadev
• leetcode-in-kotlin
• 1.8
• source code
• readme.md

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

g0001_0100.s0076_minimum_window_substring.readme.md Maven / Gradle / Ivy

76\. Minimum Window Substring

Hard

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_ `""`_._

The testcases will be generated such that the answer is **unique**.

A **substring** is a contiguous sequence of characters within the string.

**Example 1:**

**Input:** s = "ADOBECODEBANC", t = "ABC"

**Output:** "BANC"

**Explanation:** The minimum window substring "BANC" includes 'A', 'B', and 'C' from string t.

**Example 2:**

**Input:** s = "a", t = "a"

**Output:** "a"

**Explanation:** The entire string s is the minimum window.

**Example 3:**

**Input:** s = "a", t = "aa"

**Output:** ""

**Explanation:** Both 'a's from t must be included in the window. Since the largest window of s only has one 'a', return empty string.

**Constraints:**

*   `m == s.length`
*   `n == t.length`
*   1 <= m, n <= 105
*   `s` and `t` consist of uppercase and lowercase English letters.

**Follow up:** Could you find an algorithm that runs in `O(m + n)` time?