Question 1

Number of Islands — Whatnot Interview Question

Accepted Answer

"Number of Islands" is a medium difficulty problem asked at Whatnot interviews. It covers the following topics: Array, Depth-First Search, Breadth-First Search, Union Find, Matrix. You can practice it on LeetCode: https://leetcode.com/problems/number-of-islands

Question 2

Valid Palindrome II — Whatnot Interview Question

Accepted Answer

"Valid Palindrome II" is a easy difficulty problem asked at Whatnot interviews. It covers the following topics: Two Pointers, String, Greedy. You can practice it on LeetCode: https://leetcode.com/problems/valid-palindrome-ii

Question 3

Group Anagrams — Whatnot Interview Question

Accepted Answer

"Group Anagrams" is a medium difficulty problem asked at Whatnot 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

Remove All Adjacent Duplicates In String — Whatnot Interview Question

Accepted Answer

"Remove All Adjacent Duplicates In String" is a easy difficulty problem asked at Whatnot interviews. It covers the following topics: String, Stack. You can practice it on LeetCode: https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string

Question 5

Search a 2D Matrix II — Whatnot Interview Question

Accepted Answer

"Search a 2D Matrix II" is a medium difficulty problem asked at Whatnot interviews. It covers the following topics: Array, Binary Search, Divide and Conquer, Matrix. You can practice it on LeetCode: https://leetcode.com/problems/search-a-2d-matrix-ii

Question 6

Word Search — Whatnot Interview Question

Accepted Answer

"Word Search" is a medium difficulty problem asked at Whatnot interviews. It covers the following topics: Array, String, Backtracking, Depth-First Search, Matrix. You can practice it on LeetCode: https://leetcode.com/problems/word-search

#	Question Title	Difficulty	Frequency	Topics
1	Number of Islands	MEDIUM	100.0	ArrayDepth-First SearchBreadth-First Search+2
2	Valid Palindrome II	EASY	100.0	Two PointersStringGreedy
3	Group Anagrams	MEDIUM	87.8	ArrayHash TableString+1
4	Remove All Adjacent Duplicates In String	EASY	87.8	StringStack
5	Search a 2D Matrix II	MEDIUM	78.1	ArrayBinary SearchDivide and Conquer+1
6	Word Search	MEDIUM	78.1	ArrayStringBacktracking+2
7	Squares of a Sorted Array	EASY	78.1	ArrayTwo PointersSorting

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