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Problems

28 problems

Has videoPremium onlyReset
Bit ManipulationArray301Database212Hash Table116String116Depth-First Search78Math78Dynamic Programming76Sorting64Tree63Breadth-First Search53Greedy52Binary Search50Binary Tree48Two Pointers40Matrix39All topics

Premium · 28 results

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TitleSolutionAcceptDifficultyTopics
266. Palindrome PermutationVideoPremium
Solution68.6%Easy
Bit Manipulation, Hash Table +1· 5 companies
320. Generalized AbbreviationVideoPremium
Solution61.0%Medium
Backtracking, Bit Manipulation +1· 1 company
351. Android Unlock PatternsVideoPremium
Solution53.8%Medium
Backtracking, Bit Manipulation +2· 1 company
411. Minimum Unique Word AbbreviationVideoPremium
–40.5%Hard
Array, Backtracking +2· 2 companies
465. Optimal Account BalancingVideoPremium
Solution50.9%Hard
Array, Backtracking +3· 12 companies
751. IP to CIDRVideoPremium
–53.7%Medium
Bit Manipulation, String· 4 companies
1066. Campus Bikes IIVideoPremium
Solution55.9%Medium
Array, Backtracking +3· 1 company
1256. Encode NumberVideoPremium
Solution70.0%Medium
Bit Manipulation, Math +1· 1 company
1506. Find Root of N-Ary TreeVideoPremium
Solution78.4%Medium
Bit Manipulation, Depth-First Search +2· 3 companies
1908. Game of NimVideoPremium
Solution62.4%Medium
Array, Bit Manipulation +4
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
2174. Remove All Ones With Row and Column Flips IIVideoPremium
Solution67.2%Medium
Array, Bit Manipulation +2· 1 company
2184. Number of Ways to Build Sturdy Brick WallVideoPremium
Solution49.2%Medium
Array, Bit Manipulation +2· 2 companies
2247. Maximum Cost of Trip With K HighwaysPremium
Solution50.2%Hard
Bit Manipulation, Bitmask +2
2403. Minimum Time to Kill All MonstersVideoPremium
Solution56.3%Hard
Array, Bit Manipulation +2· 1 company
2505. Bitwise OR of All Subsequence SumsVideoPremium
Solution63.4%Medium
Array, Bit Manipulation +2· 1 company
2802. Find The K-th Lucky NumberVideoPremium
Solution76.1%Medium
Bit Manipulation, Math +1
2992. Number of Self-Divisible PermutationsVideoPremium
Solution72.0%Medium
Array, Backtracking +3· 1 company
3064. Guess the Number Using Bitwise Questions IVideoPremium
Solution89.0%Medium
Bit Manipulation, Interactive
3094. Guess the Number Using Bitwise Questions IIVideoPremium
Solution81.8%Medium
Bit Manipulation, Interactive
3141. Maximum Hamming DistancesVideoPremium
Solution50.0%Hard
Array, Bit Manipulation +1
3173. Bitwise OR of Adjacent ElementsVideoPremium
Solution94.8%Easy
Array, Bit Manipulation· 1 company
3199. Count Triplets with Even XOR Set Bits IVideoPremium
Solution83.3%Easy
Array, Bit Manipulation· 1 company
3215. Count Triplets with Even XOR Set Bits IIVideoPremium
Solution62.0%Medium
Array, Bit Manipulation· 1 company
3344. Maximum Sized ArrayVideoPremium
Solution51.4%Medium
Binary Search, Bit Manipulation
3595. Once TwicePremium
–76.1%Medium
Array, Bit Manipulation
3632. Subarrays with XOR at Least KPremium
–46.3%Hard
Array, Bit Manipulation +2
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