#18 Longest K unique characters substring | Data Structures and Algorithms Interview | String #3

In this video, we will see how to solve the above question asked in many companies interviews.
Data Structures and Algorithms Interview question playlist:
• Data Structures and Al...
You can practise those questions from here: practice.geeks...
And if this link doesn't work just google "question_name gfg practice".
Also if you have any doubts, pls mention them in the comment box.