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2,011 problems · 1,093 with a MIK video · 725 asked in the last 6 months
D · DSA 991Q · SQL & DBMS 102
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2011 problems, most frequent first

DoneLC #ProblemLevelHow often askedMIK video
1Two SumArrays · Asked in the last 6 monthsEasy100▶ Watch
146LRU CacheDesign Data Structures · Asked in the last 6 monthsMedium89▶ Watch
42Trapping Rain WaterArrays · Asked in the last 6 monthsHard88▶ Watch
200Number of IslandsArrays · Asked in the last 6 monthsMedium86▶ Watch
3Longest Substring Without Repeating Characters ↗Asked in the last 6 monthsMedium85Not covered yet
121Best Time to Buy and Sell Stock ↗Asked in the last 6 monthsEasy84Not covered yet
49Group AnagramsArrays · Asked in the last 6 monthsMedium81▶ Watch
2Add Two Numbers ↗Asked in the last 6 monthsMedium80Not covered yet
5Longest Palindromic SubstringDynamic Programming · Asked in the last 6 monthsMedium79▶ Watch
153SumArrays · Asked in the last 6 monthsMedium78▶ Watch
767Reorganize StringHeap / Priority Queue · Asked in the last 6 monthsMedium78▶ Watch
4Median of Two Sorted ArraysBinary Search · Asked in the last 6 monthsHard77▶ Watch
11Container With Most WaterArrays · Asked in the last 6 monthsMedium77▶ Watch
56Merge Intervals ↗Asked in the last 6 monthsMedium77Not covered yet
207Course ScheduleGraphs · Asked in the last 6 monthsMedium75▶ Watch
875Koko Eating BananasBinary Search · Asked in the last 6 monthsMedium75▶ Watch
20Valid ParenthesesStack · Asked in the last 6 monthsEasy74▶ Watch
23Merge k Sorted ListsHeap / Priority Queue · Asked in the last 6 monthsHard74▶ Watch
994Rotting OrangesGraphs · Asked in the last 6 monthsMedium74▶ Watch
14Longest Common Prefix ↗Asked in the last 6 monthsEasy73Not covered yet
560Subarray Sum Equals KArrays · Asked in the last 6 monthsMedium73▶ Watch
53Maximum Subarray ↗Asked in the last 6 monthsMedium72Not covered yet
347Top K Frequent ElementsHeap / Priority Queue · Asked in the last 6 monthsMedium72▶ Watch
33Search in Rotated Sorted ArrayBinary Search · Asked in the last 6 monthsMedium72▶ Watch
88Merge Sorted Array ↗Asked in the last 6 monthsEasy71Not covered yet
9Palindrome Number ↗Asked in the last 6 monthsEasy71Not covered yet
128Longest Consecutive Sequence ↗Asked in the last 6 monthsMedium71Not covered yet
236Lowest Common Ancestor of a Binary TreeTrees · Asked in the last 6 monthsMedium70▶ Watch
138Copy List with Random PointerLinked List · Asked in the last 6 monthsMedium70▶ Watch
169Majority ElementArrays · Asked in the last 6 monthsEasy70▶ Watch
22Generate ParenthesesRecursion · Asked in the last 6 monthsMedium69▶ Watch
127Word Ladder ↗Asked in the last 6 monthsHard68Not covered yet
55Jump GameDynamic Programming · Asked in the last 6 monthsMedium68▶ Watch
238Product of Array Except SelfArrays · Asked in the last 6 monthsMedium68▶ Watch
198House RobberDynamic Programming · Asked in the last 6 monthsMedium67▶ Watch
70Climbing StairsDynamic Programming · Asked in the last 6 monthsEasy67▶ Watch
17Letter Combinations of a Phone Number ↗Asked in the last 6 monthsMedium67Not covered yet
21Merge Two Sorted Lists ↗Asked in the last 6 monthsEasy67Not covered yet
210Course Schedule IIGraphs · Asked in the last 6 monthsMedium66▶ Watch
239Sliding Window MaximumSliding Window · Asked in the last 6 monthsHard66▶ Watch

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