Question 1

Word Ladder — Reddit Interview Question

Accepted Answer

"Word Ladder" is a hard difficulty problem asked at Reddit interviews. It covers the following topics: Hash Table, String, Breadth-First Search. You can practice it on LeetCode: https://leetcode.com/problems/word-ladder

Question 2

Number of Ways to Buy Pens and Pencils — Reddit Interview Question

Accepted Answer

"Number of Ways to Buy Pens and Pencils" is a medium difficulty problem asked at Reddit interviews. It covers the following topics: Math, Enumeration. You can practice it on LeetCode: https://leetcode.com/problems/number-of-ways-to-buy-pens-and-pencils

Question 3

LRU Cache — Reddit Interview Question

Accepted Answer

"LRU Cache" is a medium difficulty problem asked at Reddit interviews. It covers the following topics: Hash Table, Linked List, Design, Doubly-Linked List. You can practice it on LeetCode: https://leetcode.com/problems/lru-cache

Question 4

Design Hit Counter — Reddit Interview Question

Accepted Answer

"Design Hit Counter" is a medium difficulty problem asked at Reddit 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 5

Logger Rate Limiter — Reddit Interview Question

Accepted Answer

"Logger Rate Limiter" is a easy difficulty problem asked at Reddit interviews. It covers the following topics: Hash Table, Design, Data Stream. You can practice it on LeetCode: https://leetcode.com/problems/logger-rate-limiter

Question 6

Number of Islands — Reddit Interview Question

Accepted Answer

"Number of Islands" is a medium difficulty problem asked at Reddit 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 Title	Difficulty	Frequency	Topics
1	Word Ladder	HARD	100.0	Hash TableStringBreadth-First Search
2	Number of Ways to Buy Pens and Pencils	MEDIUM	88.6	MathEnumeration
3	LRU Cache	MEDIUM	81.6	Hash TableLinked ListDesign+1
4	Design Hit Counter	MEDIUM	70.7	ArrayBinary SearchDesign+2
5	Logger Rate Limiter	EASY	70.7	Hash TableDesignData Stream
6	Number of Islands	MEDIUM	57.2	ArrayDepth-First SearchBreadth-First Search+2

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