Grokking Meta Coding Interview
Ask Author
Back to course home

0% completed

Vote For New Content
Minimum Window Substring (hard)
Table of Contents

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible

Problem Statement

Given a string s and t of length m and n respectively, find the smallest substring in a given string 's' that contains all the characters (including duplicate) of another string 't'. The order of characters in 't' doesn't matter, but the substring in 's' must include all characters of 't', possibly with additional characters.

If no such substring exists, return an empty string.

Examples

Example 1:

  • Input: s = "xyyzyzyx", t = "xyz"
  • Expected Output: "zyx"
  • Justification: "zyx" is the shortest substring of 's' that contains 'x', 'y', and 'z'.

Example 2:

  • Input: s = "abracadabra", t = "aa"
  • Expected Output: "ada"
  • Justification: "ada" at the end of 's' is the shortest substring containing all 'a's in 't'.

Example 3:

  • Input: s = "welcomeback", t = "ole"
  • Expected Output: "elco"
  • Justification: "elco" includes 'o', 'l', and 'e', fulfilling the requirements with the minimum length.

Try it yourself

Try solving this question here:

Python3
Python3

. . . .

.....

.....

.....

Like the course? Get enrolled and start learning!

Table of Contents

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible