Roku Interview Guide

Showing 3 questions

Ranking

A question's ranking corresponds to how commonly it's asked by Roku. The higher the ranking, the more likely you'll encounter it in a Roku interview.

Question

Frequency

Difficulty

LRU Cache

Design a data structure that acts as a Least Recently Used (LRU) cache. Implement methods to get and put key-value pairs, evicting the least recently used entry when the cache is full.

Linked ListsDesign

Very likely

If you have a Roku interview, it's very likely that you will get this question

Medium

#1. LRU Cache

Medium

Design a data structure that acts as a Least Recently Used (LRU) cache. Implement methods to get and put key-value pairs, evicting the least recently used entry when the cache is full.

Linked ListsDesign

This question is very likely to be asked in your Roku interview

Top K Frequent Elements

Find the k most frequent elements in a given array of numbers. Return the top k elements based on their frequency.

Arrays

Very likely

If you have a Roku interview, it's very likely that you will get this question

Medium

#2. Top K Frequent Elements

Medium

Find the k most frequent elements in a given array of numbers. Return the top k elements based on their frequency.

Arrays

This question is very likely to be asked in your Roku interview

Substring with Concatenation of All Words

Find all starting indices of substring(s) in a given string that are formed by the concatenation of all words from a provided list, where each word must appear exactly once and without any intervening characters.

ArraysStringsTwo PointersSliding Windows

Somewhat likely

If you have a Roku interview, you might get this question

Hard

#3. Substring with Concatenation of All Words

Hard

ArraysStringsTwo PointersSliding Windows

This question is somewhat likely to be asked in your Roku interview

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