Duolingo

5 problems · 2 with a MIK video · 1 asked in the last 6 months

D · DSA 2

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5 problems, most frequent first

DoneLC #ProblemLevelHow often askedMIK video

2227Encrypt and Decrypt Strings ↗Asked in the last 6 monthsHard100Not covered yet

2365Task Scheduler II ↗Medium68Not covered yet

Source: community data (liquidslr/leetcode-company-wise-problems), updated Aug 16, 2026. Company tags are crowd-reported and may be incomplete.