Question 1

Encrypt and Decrypt Strings — Duolingo Interview Question

Accepted Answer

"Encrypt and Decrypt Strings" is a hard difficulty problem asked at Duolingo interviews. It covers the following topics: Array, Hash Table, String, Design, Trie. You can practice it on LeetCode: https://leetcode.com/problems/encrypt-and-decrypt-strings

Question 2

Minimum Number of People to Teach — Duolingo Interview Question

Accepted Answer

"Minimum Number of People to Teach" is a medium difficulty problem asked at Duolingo interviews. It covers the following topics: Array, Hash Table, Greedy. You can practice it on LeetCode: https://leetcode.com/problems/minimum-number-of-people-to-teach

Question 3

K Radius Subarray Averages — Duolingo Interview Question

Accepted Answer

"K Radius Subarray Averages" is a medium difficulty problem asked at Duolingo interviews. It covers the following topics: Array, Sliding Window. You can practice it on LeetCode: https://leetcode.com/problems/k-radius-subarray-averages

Question 4

Task Scheduler II — Duolingo Interview Question

Accepted Answer

"Task Scheduler II" is a medium difficulty problem asked at Duolingo interviews. It covers the following topics: Array, Hash Table, Simulation. You can practice it on LeetCode: https://leetcode.com/problems/task-scheduler-ii

#	Question Title	Difficulty	Frequency	Topics
1	Encrypt and Decrypt Strings	HARD	100.0	ArrayHash TableString+2
2	Minimum Number of People to Teach	MEDIUM	82.6	ArrayHash TableGreedy
3	K Radius Subarray Averages	MEDIUM	80.9	ArraySliding Window
4	Task Scheduler II	MEDIUM	52.1	ArrayHash TableSimulation

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