Count Substrings with K Distinct Characters | Hashmap Interview Questions
Автор: Pepcoding
Загружено: 2020-10-12
Просмотров: 46007
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NADOS also enables doubt support, career opportunities and contests besides free of charge content for learning. In this video, we discuss the count substrings with K distinct characters problem using hashmaps in java. In this problem,
1. You are given a string(str) and a number K.
2. You have to find the count of valid substrings of the given string.
3. Valid substring is defined as a substring that has exactly K unique characters.
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