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Array2,209 String870 Hash Table786 Math682 Dynamic Programming666 Sorting504 Greedy480 Binary Search352 Depth-First Search335 Database303 Bit Manipulation283 Matrix278 Tree261 Breadth-First Search255 Two Pointers249 All topics

With video · 682 results

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TitleSolutionAcceptDifficultyTopics

2. Add Two NumbersVideo

Solution49.3%Medium

Linked List, Math +1· 37 companies

7. Reverse IntegerVideo

Solution32.2%Medium

Math· 22 companies

9. Palindrome NumberVideo

Solution61.0%Easy

Math· 31 companies

12. Integer to RomanVideo

Solution71.8%Medium

Hash Table, Math +1· 31 companies

13. Roman to IntegerVideo

Solution67.0%Easy

Hash Table, Math +1· 36 companies

29. Divide Two IntegersVideo

Solution20.1%Medium

Bit Manipulation, Math· 8 companies

43. Multiply StringsVideo

Solution44.4%Medium

Math, Simulation +1· 17 companies

48. Rotate ImageVideo

Solution80.7%Medium

Array, Math +1· 36 companies

50. Pow(x, n)Video

Solution39.0%Medium

Math, Recursion· 22 companies

60. Permutation SequenceVideo

Solution54.3%Hard

Math, Recursion· 7 companies

62. Unique PathsVideo

Solution67.3%Medium

Combinatorics, Dynamic Programming +1· 21 companies

66. Plus OneVideo

Solution50.3%Easy

Array, Math· 13 companies

67. Add BinaryVideo

Solution58.4%Easy

Bit Manipulation, Math +2· 17 companies

69. Sqrt(x)Video

Solution42.2%Easy

Binary Search, Math· 17 companies

70. Climbing StairsVideo

Solution54.0%Easy

Dynamic Programming, Math +1· 37 companies

89. Gray CodeVideo

Solution66.2%Medium

Backtracking, Bit Manipulation +1· 5 companies

96. Unique Binary Search TreesVideo

Solution64.0%Medium

Binary Search Tree, Binary Tree +3· 10 companies

149. Max Points on a LineVideo

Solution31.6%Hard

Array, Geometry +2· 16 companies

150. Evaluate Reverse Polish NotationVideo

Solution58.5%Medium

Array, Math +1· 18 companies

166. Fraction to Recurring DecimalVideo

Solution31.3%Medium

Hash Table, Math +1· 10 companies

168. Excel Sheet Column TitleVideo

Solution47.9%Easy

Math, String· 10 companies

171. Excel Sheet Column NumberVideo

Solution68.6%Easy

Math, String· 9 companies

172. Factorial Trailing ZeroesVideo

Solution47.5%Medium

Math· 5 companies

189. Rotate ArrayVideo

Solution45.3%Medium

Array, Math +1· 27 companies

202. Happy NumberVideo

Solution60.0%Easy

Hash Table, Math +1· 27 companies

204. Count PrimesVideo

Solution35.8%Medium

Array, Enumeration +2· 17 companies

223. Rectangle AreaVideo

Solution50.3%Medium

Geometry, Math· 7 companies

224. Basic CalculatorVideo

Solution47.3%Hard

Math, Recursion +2· 25 companies

227. Basic Calculator IIVideo

Solution47.3%Medium

Math, Stack +1· 32 companies

231. Power of TwoVideo

Solution50.5%Easy

Bit Manipulation, Math +1· 11 companies

233. Number of Digit OneVideo

Solution39.9%Hard

Dynamic Programming, Math +1· 6 companies

241. Different Ways to Add ParenthesesVideo

Solution73.7%Medium

Dynamic Programming, Math +3· 6 companies

258. Add DigitsVideo

Solution69.3%Easy

Math, Number Theory +1· 10 companies

263. Ugly NumberVideo

Solution43.9%Easy

Math· 8 companies

264. Ugly Number IIVideo

Solution49.7%Medium

Dynamic Programming, Hash Table +2· 9 companies

268. Missing NumberVideo

Solution72.4%Easy

Array, Binary Search +4· 19 companies

273. Integer to English WordsVideo

Solution34.9%Hard

Math, Recursion +1· 24 companies

279. Perfect SquaresVideo

Solution57.0%Medium

Breadth-First Search, Dynamic Programming +1· 12 companies

282. Expression Add OperatorsVideo

Solution43.5%Hard

Backtracking, Math +1· 7 companies

292. Nim GameVideo

Solution60.6%Easy

Brainteaser, Game Theory +1· 6 companies

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

313. Super Ugly NumberVideo

Solution46.6%Medium

Array, Dynamic Programming +1· 5 companies

319. Bulb SwitcherVideo

Solution56.2%Medium

Brainteaser, Math· 9 companies

326. Power of ThreeVideo

Solution51.4%Easy

Math, Recursion· 6 companies

335. Self CrossingVideo

Solution36.9%Hard

Array, Geometry +1· 1 company

342. Power of FourVideo

Solution52.5%Easy

Bit Manipulation, Math +1· 8 companies

343. Integer BreakVideo

Solution62.6%Medium

Dynamic Programming, Math· 6 companies

356. Line ReflectionVideoPremium

Solution36.3%Medium

Array, Hash Table +1· 2 companies

357. Count Numbers with Unique DigitsVideo

Solution56.1%Medium

Backtracking, Dynamic Programming +1· 5 companies

Showing 1–50 of 682