Question 1

Compare Version Numbers — Nextdoor Interview Question

Accepted Answer

"Compare Version Numbers" is a medium difficulty problem asked at Nextdoor interviews. It covers the following topics: Two Pointers, String. You can practice it on LeetCode: https://leetcode.com/problems/compare-version-numbers

Question 2

All O`one Data Structure — Nextdoor Interview Question

Accepted Answer

"All O`one Data Structure" is a hard difficulty problem asked at Nextdoor interviews. It covers the following topics: Hash Table, Linked List, Design, Doubly-Linked List. You can practice it on LeetCode: https://leetcode.com/problems/all-oone-data-structure

Question 3

Merge Intervals — Nextdoor Interview Question

Accepted Answer

"Merge Intervals" is a medium difficulty problem asked at Nextdoor interviews. It covers the following topics: Array, Sorting. You can practice it on LeetCode: https://leetcode.com/problems/merge-intervals

Question 4

Letter Combinations of a Phone Number — Nextdoor Interview Question

Accepted Answer

"Letter Combinations of a Phone Number" is a medium difficulty problem asked at Nextdoor interviews. It covers the following topics: Hash Table, String, Backtracking. You can practice it on LeetCode: https://leetcode.com/problems/letter-combinations-of-a-phone-number

Question 5

Trapping Rain Water — Nextdoor Interview Question

Accepted Answer

"Trapping Rain Water" is a hard difficulty problem asked at Nextdoor interviews. It covers the following topics: Array, Two Pointers, Dynamic Programming, Stack, Monotonic Stack. You can practice it on LeetCode: https://leetcode.com/problems/trapping-rain-water

Question 6

Nested List Weight Sum — Nextdoor Interview Question

Accepted Answer

"Nested List Weight Sum" is a medium difficulty problem asked at Nextdoor interviews. It covers the following topics: Depth-First Search, Breadth-First Search. You can practice it on LeetCode: https://leetcode.com/problems/nested-list-weight-sum

#	Question Title	Difficulty	Frequency	Topics
1	Compare Version Numbers	MEDIUM	100.0	Two PointersString
2	All O`one Data Structure	HARD	98.0	Hash TableLinked ListDesign+1
3	Merge Intervals	MEDIUM	78.9	ArraySorting
4	Letter Combinations of a Phone Number	MEDIUM	64.4	Hash TableStringBacktracking
5	Trapping Rain Water	HARD	64.4	ArrayTwo PointersDynamic Programming+2
6	Nested List Weight Sum	MEDIUM	64.4	Depth-First SearchBreadth-First Search
7	Divide Two Integers	MEDIUM	64.4	MathBit Manipulation
8	Time Based Key-Value Store	MEDIUM	64.4	Hash TableStringBinary Search+1

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