Hash Table

8 questions

1Linked List Cycle IIMedium

Hash TableLinked ListTwo Pointers

2Number of Divisible SubstringsMedium

Hash TableStringCounting

3Longest Substring Without Repeating CharactersMedium

Hash TableStringSliding Window

4Lexicographically Smallest String After Deleting Duplicate CharactersHard

Hash TableStringStack

5Linked List Cycle IIMedium

Hash TableLinked ListTwo Pointers

6Number of Divisible SubstringsMedium

Hash TableStringCounting

7Longest Substring Without Repeating CharactersMedium

Hash TableStringSliding Window

8Ugly Number IIMedium

Hash TableMathDynamic Programming