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Problems

78 problems

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Array301Database212Hash Table116String116Depth-First Search78Math78Dynamic Programming76Sorting64Tree63Breadth-First Search53Greedy52Binary Search50Binary Tree48Two Pointers40Matrix39All topics

Premium · 78 results

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TitleSolutionAcceptDifficultyTopics
294. Flip Game IIVideoPremium
Solution52.2%Medium
Backtracking, Dynamic Programming +3· 2 companies
296. Best Meeting PointVideoPremium
Solution61.1%Hard
Array, Math +2· 9 companies
356. Line ReflectionVideoPremium
Solution36.3%Medium
Array, Hash Table +1· 2 companies
360. Sort Transformed ArrayVideoPremium
Solution58.0%Medium
Array, Math +2· 3 companies
369. Plus One Linked ListVideoPremium
Solution61.1%Medium
Linked List, Math· 2 companies
469. Convex PolygonVideoPremium
Solution40.3%Medium
Array, Geometry +1· 1 company
573. Squirrel SimulationVideoPremium
Solution57.1%Medium
Array, Math· 1 company
625. Minimum FactorizationVideoPremium
Solution34.2%Medium
Greedy, Math· 1 company
634. Find the Derangement of An ArrayVideoPremium
Solution41.9%Medium
Dynamic Programming, Math· 1 company
651. 4 Keys KeyboardVideoPremium
Solution56.5%Medium
Dynamic Programming, Math· 2 companies
660. Remove 9VideoPremium
–57.3%Hard
Math· 1 company
750. Number Of Corner RectanglesVideoPremium
Solution67.8%Medium
Array, Dynamic Programming +2· 1 company
772. Basic Calculator IIIVideoPremium
Solution53.2%Hard
Math, Recursion +2· 16 companies
800. Similar RGB ColorVideoPremium
Solution68.6%Easy
Enumeration, Math +1· 1 company
1056. Confusing NumberVideoPremium
Solution49.8%Easy
Math· 1 company
1058. Minimize Rounding Error to Meet TargetVideoPremium
Solution45.9%Medium
Array, Greedy +3· 1 company
1067. Digit Count in RangeVideoPremium
Solution46.4%Hard
Dynamic Programming, Math· 1 company
1085. Sum of Digits in the Minimum NumberVideoPremium
Solution76.6%Easy
Array, Math· 1 company
1088. Confusing Number IIVideoPremium
Solution47.1%Hard
Backtracking, Math· 1 company
1118. Number of Days in a MonthVideoPremium
Solution59.4%Easy
Math· 1 company
1134. Armstrong NumberVideoPremium
Solution77.8%Easy
Math· 1 company
1180. Count Substrings with Only One Distinct LetterVideoPremium
Solution80.9%Easy
Math, String· 1 company
1199. Minimum Time to Build BlocksVideoPremium
Solution49.2%Hard
Array, Greedy +2· 1 company
1215. Stepping NumbersVideoPremium
Solution48.2%Medium
Backtracking, Breadth-First Search +1· 1 company
1228. Missing Number In Arithmetic ProgressionVideoPremium
Solution52.0%Easy
Array, Math· 2 companies
1230. Toss Strange CoinsVideoPremium
Solution58.1%Medium
Array, Dynamic Programming +2· 1 company
1256. Encode NumberVideoPremium
Solution70.0%Medium
Bit Manipulation, Math +1· 1 company
1259. Handshakes That Don't CrossVideoPremium
Solution61.1%Hard
Dynamic Programming, Math· 1 company
1271. HexspeakVideoPremium
Solution57.5%Easy
Math, String· 1 company
1427. Perform String ShiftsVideoPremium
Solution56.0%Easy
Array, Math +1· 1 company
1538. Guess the Majority in a Hidden ArrayVideoPremium
Solution68.8%Medium
Array, Interactive +1· 1 company
1628. Design an Expression Tree With Evaluate FunctionVideoPremium
Solution82.4%Medium
Array, Binary Tree +4· 1 company
1634. Add Two Polynomials Represented as Linked ListsVideoPremium
Solution61.1%Medium
Linked List, Math +1· 1 company
1908. Game of NimVideoPremium
Solution62.4%Medium
Array, Bit Manipulation +4
1924. Erect the Fence IIVideoPremium
–49.4%Hard
Array, Geometry +1· 1 company
1956. Minimum Time For K Virus Variants to SpreadVideoPremium
–49.5%Hard
Array, Binary Search +3
1999. Smallest Greater Multiple Made of Two DigitsVideoPremium
Solution47.4%Medium
Enumeration, Math· 1 company
2005. Subtree Removal Game with Fibonacci TreeVideoPremium
–54.9%Hard
Binary Tree, Dynamic Programming +3· 1 company
2083. Substrings That Begin and End With the Same LetterVideoPremium
Solution74.1%Medium
Counting, Hash Table +3
2128. Remove All Ones With Row and Column FlipsVideoPremium
Solution76.2%Medium
Array, Bit Manipulation +2· 1 company
2152. Minimum Number of Lines to Cover PointsVideoPremium
Solution42.9%Medium
Array, Backtracking +6· 1 company
2189. Number of Ways to Build House of CardsPremium
Solution60.2%Medium
Dynamic Programming, Math· 1 company
2198. Number of Single Divisor TripletsVideoPremium
Solution53.1%Medium
Math
2393. Count Strictly Increasing SubarraysVideoPremium
Solution70.8%Medium
Array, Dynamic Programming +1· 1 company
2417. Closest Fair IntegerVideoPremium
Solution43.7%Medium
Enumeration, Math
2436. Minimum Split Into Subarrays With GCD Greater Than OneVideoPremium
Solution70.2%Medium
Array, Dynamic Programming +3
2450. Number of Distinct Binary Strings After Applying OperationsVideoPremium
Solution63.0%Medium
Math, String· 1 company
2464. Minimum Subarrays in a Valid SplitVideoPremium
Solution64.7%Medium
Array, Dynamic Programming +2
2489. Number of Substrings With Fixed RatioVideoPremium
Solution56.0%Medium
Hash Table, Math +2· 1 company
2495. Number of Subarrays Having Even ProductVideoPremium
Solution63.2%Medium
Array, Dynamic Programming +1
Showing 1–50 of 78