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51 problems · 26 with a MIK video · 0 asked in the last 6 months

D · DSA 20Q · SQL & DBMS 6

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TopicPatternDifficultyStatusSortLast 6 monthsOnly with MIK video

51 problems, most frequent first

DoneLC #ProblemLevelHow often askedMIK video

433Minimum Genetic MutationGraphsMedium100▶ Watch

42Trapping Rain WaterArraysHard97▶ Watch

56Merge Intervals ↗Medium97Not covered yet

1348Tweet Counts Per Frequency ↗Medium97Not covered yet

146LRU CacheDesign Data StructuresMedium97▶ Watch

341Flatten Nested List IteratorDesign Data StructuresMedium97▶ Watch

355Design Twitter ↗Medium97Not covered yet

1683Invalid TweetsString FunctionsEasy97▶ Watch

12Integer to RomanStringsMedium94▶ Watch

10Regular Expression MatchingRecursionHard94▶ Watch

20Valid ParenthesesStackEasy94▶ Watch

43Multiply Strings ↗Medium94Not covered yet

118Pascal's TriangleArraysEasy94▶ Watch

2073Time Needed to Buy TicketsArraysEasy94▶ Watch

60Permutation Sequence ↗Hard94Not covered yet

23Merge k Sorted ListsHeap / Priority QueueHard94▶ Watch

140Word Break IIBacktrackingHard94▶ Watch

44Wildcard Matching ↗Hard94Not covered yet

149Max Points on a LineMathHard94▶ Watch

161One Edit Distance ↗LeetCode PremiumMedium94Not covered yet

206Reverse Linked ListLinked ListEasy94▶ Watch

202Happy Number ↗Easy94Not covered yet

235Lowest Common Ancestor of a Binary Search Tree ↗Medium94Not covered yet

218The Skyline Problem ↗Hard94Not covered yet

269Alien Dictionary ↗LeetCode PremiumHard94Not covered yet

208Implement Trie (Prefix Tree)TriesMedium94▶ Watch

251Flatten 2D Vector ↗LeetCode PremiumMedium94Not covered yet

296Best Meeting Point ↗LeetCode PremiumHard94Not covered yet

323Number of Connected Components in an Undirected Graph ↗LeetCode PremiumMedium94Not covered yet

1206Design Skiplist ↗Hard94Not covered yet

378Kth Smallest Element in a Sorted Matrix ↗Medium94Not covered yet

1347Minimum Number of Steps to Make Two Strings AnagramStringsMedium94▶ Watch

407Trapping Rain Water IIHeap / Priority QueueHard94▶ Watch

468Validate IP Address ↗Medium94Not covered yet

380Insert Delete GetRandom O(1)Design Data StructuresMedium94▶ Watch

580Count Student Number in DepartmentsJoins · LeetCode PremiumMedium94▶ Watch

1459Rectangles AreaJoins · LeetCode PremiumMedium94▶ Watch

585Investments in 2016SubqueriesMedium94▶ Watch

586Customer Placing the Largest Number of OrdersAggregation & GROUP BYEasy94▶ Watch

608Tree NodeConditional Logic (CASE)Medium94▶ Watch

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