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C

Citadel

87 problems · 46 with a MIK video · 6 asked in the last 6 months

D · DSA 46

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TopicPatternDifficultyStatusSortLast 6 monthsOnly with MIK video

87 problems, most frequent first

DoneLC #ProblemLevelHow often askedMIK video

239Sliding Window MaximumSliding WindowHard100▶ Watch

2484Count Palindromic Subsequences ↗Hard99Not covered yet

647Palindromic SubstringsDynamic ProgrammingMedium94▶ Watch

121Best Time to Buy and Sell Stock ↗Easy90Not covered yet

295Find Median from Data StreamHeap / Priority Queue · Asked in the last 6 monthsHard88▶ Watch

56Merge Intervals ↗Medium88Not covered yet

1515Best Position for a Service Centre ↗Hard88Not covered yet

1801Number of Orders in the Backlog ↗Asked in the last 6 monthsMedium85Not covered yet

3186Maximum Total Damage With Spell CastingDynamic ProgrammingMedium83▶ Watch

146LRU CacheDesign Data StructuresMedium83▶ Watch

2361Minimum Costs Using the Train Line ↗LeetCode PremiumHard83Not covered yet

2702Minimum Operations to Make Numbers Non-positive ↗LeetCode PremiumHard83Not covered yet

718Maximum Length of Repeated Subarray ↗Medium80Not covered yet

399Evaluate DivisionGraphsMedium80▶ Watch

2661First Completely Painted Row or ColumnArraysMedium80▶ Watch

380Insert Delete GetRandom O(1)Design Data StructuresMedium77▶ Watch

2050Parallel Courses IIIGraphs · Asked in the last 6 monthsHard77▶ Watch

759Employee Free Time ↗LeetCode PremiumHard73Not covered yet

1229Meeting Scheduler ↗LeetCode PremiumMedium73Not covered yet

287Find the Duplicate NumberArraysMedium73▶ Watch

460LFU CacheDesign Data StructuresHard73▶ Watch

981Time Based Key-Value Store ↗Asked in the last 6 monthsMedium73Not covered yet

297Serialize and Deserialize Binary Tree ↗Hard68Not covered yet

622Design Circular Queue ↗Medium68Not covered yet

412Fizz Buzz ↗Easy68Not covered yet

69Sqrt(x) ↗Easy68Not covered yet

1606Find Servers That Handled Most Number of Requests ↗Hard68Not covered yet

2598Smallest Missing Non-negative Integer After OperationsMathMedium68▶ Watch

200Number of IslandsArraysMedium63▶ Watch

124Binary Tree Maximum Path SumTreesHard63▶ Watch

23Merge k Sorted ListsHeap / Priority QueueHard63▶ Watch

150Evaluate Reverse Polish NotationStackMedium63▶ Watch

2958Length of Longest Subarray With at Most K FrequencySliding WindowMedium63▶ Watch

765Couples Holding Hands ↗Hard63Not covered yet

631Design Excel Sum Formula ↗LeetCode PremiumHard63Not covered yet

210Course Schedule IIGraphsMedium63▶ Watch

332Reconstruct ItineraryGraphsHard63▶ Watch

3484Design SpreadsheetDesign Data Structures · Asked in the last 6 monthsMedium63▶ Watch

1004Max Consecutive Ones IIISliding WindowMedium63▶ Watch

348Design Tic-Tac-Toe ↗LeetCode PremiumMedium63Not covered yet

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