Question 1

Insert Delete GetRandom O(1) — Affirm Interview Question

Accepted Answer

"Insert Delete GetRandom O(1)" is a medium difficulty problem asked at Affirm interviews. It covers the following topics: Array, Hash Table, Math, Design, Randomized. You can practice it on LeetCode: https://leetcode.com/problems/insert-delete-getrandom-o1

Question 2

Shortest Uncommon Substring in an Array — Affirm Interview Question

Accepted Answer

"Shortest Uncommon Substring in an Array" is a medium difficulty problem asked at Affirm interviews. It covers the following topics: Array, Hash Table, String, Trie. You can practice it on LeetCode: https://leetcode.com/problems/shortest-uncommon-substring-in-an-array

Question 3

Group Anagrams — Affirm Interview Question

Accepted Answer

"Group Anagrams" is a medium difficulty problem asked at Affirm interviews. It covers the following topics: Array, Hash Table, String, Sorting. You can practice it on LeetCode: https://leetcode.com/problems/group-anagrams

Question 4

Parse Lisp Expression — Affirm Interview Question

Accepted Answer

"Parse Lisp Expression" is a hard difficulty problem asked at Affirm interviews. It covers the following topics: Hash Table, String, Stack, Recursion. You can practice it on LeetCode: https://leetcode.com/problems/parse-lisp-expression

Question 5

Design Hit Counter — Affirm Interview Question

Accepted Answer

"Design Hit Counter" is a medium difficulty problem asked at Affirm interviews. It covers the following topics: Array, Binary Search, Design, Queue, Data Stream. You can practice it on LeetCode: https://leetcode.com/problems/design-hit-counter

Question 6

Insert Delete GetRandom O(1) - Duplicates allowed — Affirm Interview Question

Accepted Answer

"Insert Delete GetRandom O(1) - Duplicates allowed" is a hard difficulty problem asked at Affirm interviews. It covers the following topics: Array, Hash Table, Math, Design, Randomized. You can practice it on LeetCode: https://leetcode.com/problems/insert-delete-getrandom-o1-duplicates-allowed

#	Question Title	Difficulty	Frequency	Topics
1	Insert Delete GetRandom O(1)	MEDIUM	100.0	ArrayHash TableMath+2
2	Shortest Uncommon Substring in an Array	MEDIUM	81.0	ArrayHash TableString+1
3	Group Anagrams	MEDIUM	76.6	ArrayHash TableString+1
4	Parse Lisp Expression	HARD	74.9	Hash TableStringStack+1
5	Design Hit Counter	MEDIUM	73.0	ArrayBinary SearchDesign+2
6	Insert Delete GetRandom O(1) - Duplicates allowed	HARD	70.9	ArrayHash TableMath+2
7	String Compression	MEDIUM	68.4	Two PointersString
8	Valid Anagram	EASY	65.6	Hash TableStringSorting
9	Coin Change	MEDIUM	58.3	ArrayDynamic ProgrammingBreadth-First Search
10	String Compression III	MEDIUM	45.8	String

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