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Problems

797 problems

Has videoPremium onlyReset
Array2,237String877Hash Table797Math691Dynamic Programming673Sorting508Greedy485Binary Search357Depth-First Search338Database308Bit Manipulation286Matrix279Tree264Breadth-First Search257Prefix Sum252All topics

797 results

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TitleSolutionAcceptDifficultyTopics
1876. Substrings of Size Three with Distinct CharactersVideo
Solution77.3%Easy
Counting, Hash Table +2· 5 companies
1893. Check if All the Integers in a Range Are CoveredVideo
Solution51.4%Easy
Array, Hash Table +1· 3 companies
1897. Redistribute Characters to Make All Strings EqualVideo
Solution67.0%Easy
Counting, Hash Table +1· 1 company
1906. Minimum Absolute Difference QueriesVideo
Solution46.4%Medium
Array, Hash Table· 1 company
1912. Design Movie Rental SystemVideo
Solution62.5%Hard
Array, Design +3· 2 companies
1915. Number of Wonderful SubstringsVideo
Solution66.8%Medium
Bit Manipulation, Hash Table +2· 2 companies
1930. Unique Length-3 Palindromic SubsequencesVideo
Solution73.8%Medium
Bit Manipulation, Hash Table +2· 6 companies
1932. Merge BSTs to Create Single BSTVideo
Solution40.3%Hard
Binary Search, Binary Tree +3· 3 companies
1935. Maximum Number of Words You Can TypeVideo
Solution82.9%Easy
Hash Table, String· 4 companies
1938. Maximum Genetic Difference QueryVideo
Solution48.6%Hard
Array, Bit Manipulation +3· 1 company
1940. Longest Common Subsequence Between Sorted ArraysVideoPremium
Solution81.3%Medium
Array, Counting +1· 1 company
1941. Check if All Characters Have Equal Number of OccurrencesVideo
Solution79.4%Easy
Counting, Hash Table +1· 4 companies
1942. The Number of the Smallest Unoccupied ChairVideo
Solution60.3%Medium
Array, Hash Table +1· 5 companies
1943. Describe the PaintingVideo
Solution53.3%Medium
Array, Hash Table +2· 3 companies
1948. Delete Duplicate Folders in SystemVideo
Solution77.7%Hard
Array, Hash Function +3· 6 companies
1980. Find Unique Binary StringVideo
Solution81.2%Medium
Array, Backtracking +2· 5 companies
1983. Widest Pair of Indices With Equal Range SumVideoPremium
Solution54.0%Medium
Array, Hash Table +1· 1 company
1993. Operations on TreeVideo
Solution46.3%Medium
Array, Breadth-First Search +4· 3 companies
1995. Count Special QuadrupletsVideo
Solution65.1%Easy
Array, Enumeration +1· 3 companies
2001. Number of Pairs of Interchangeable RectanglesVideo
Solution53.1%Medium
Array, Counting +3· 2 companies
2006. Count Number of Pairs With Absolute Difference KVideo
Solution85.4%Easy
Array, Counting +1· 4 companies
2007. Find Original Array From Doubled ArrayVideo
Solution41.0%Medium
Array, Greedy +2· 6 companies
2008. Maximum Earnings From TaxiVideo
Solution46.9%Medium
Array, Binary Search +3· 8 companies
2009. Minimum Number of Operations to Make Array ContinuousVideo
Solution52.0%Hard
Array, Binary Search +2· 5 companies
2013. Detect SquaresVideo
Solution53.0%Medium
Array, Counting +2· 4 companies
2023. Number of Pairs of Strings With Concatenation Equal to TargetVideo
Solution75.6%Medium
Array, Counting +2· 2 companies
2025. Maximum Number of Ways to Partition an ArrayVideo
Solution36.2%Hard
Array, Counting +3· 2 companies
2032. Two Out of ThreeVideo
Solution77.5%Easy
Array, Bit Manipulation +1· 2 companies
2034. Stock Price Fluctuation Video
Solution49.1%Medium
Data Stream, Design +3· 6 companies
2043. Simple Bank SystemVideo
Solution69.7%Medium
Array, Design +2· 20 companies
2053. Kth Distinct String in an ArrayVideo
Solution82.1%Easy
Array, Counting +2· 2 companies
2062. Count Vowel Substrings of a StringVideo
Solution73.6%Easy
Hash Table, String· 12 companies
2068. Check Whether Two Strings are Almost EquivalentVideo
Solution64.5%Easy
Counting, Hash Table +1· 1 company
2080. Range Frequency QueriesVideo
Solution44.3%Medium
Array, Binary Search +3· 2 companies
2083. Substrings That Begin and End With the Same LetterVideoPremium
Solution74.1%Medium
Counting, Hash Table +3
2085. Count Common Words With One OccurrenceVideo
Solution73.9%Easy
Array, Counting +2· 1 company
2094. Finding 3-Digit Even NumbersVideo
Solution78.8%Easy
Array, Enumeration +2· 5 companies
2099. Find Subsequence of Length K With the Largest SumVideo
Solution57.4%Easy
Array, Hash Table +2· 6 companies
2103. Rings and RodsVideo
Solution81.5%Easy
Hash Table, String· 1 company
2107. Number of Unique Flavors After Sharing K CandiesVideoPremium
Solution62.4%Medium
Array, Hash Table +1· 2 companies
2115. Find All Possible Recipes from Given SuppliesVideo
Solution56.8%Medium
Array, Graph +3· 10 companies
2121. Intervals Between Identical ElementsVideo
Solution48.4%Medium
Array, Hash Table +1· 2 companies
2122. Recover the Original ArrayVideo
Solution42.0%Hard
Array, Enumeration +3· 1 company
2131. Longest Palindrome by Concatenating Two Letter WordsVideo
Solution53.5%Medium
Array, Counting +3· 6 companies
2133. Check if Every Row and Column Contains All NumbersVideo
Solution54.0%Easy
Array, Hash Table +1· 4 companies
2135. Count Words Obtained After Adding a LetterVideo
Solution44.0%Medium
Array, Bit Manipulation +3· 1 company
2150. Find All Lonely Numbers in the ArrayVideo
Solution64.0%Medium
Array, Counting +1· 2 companies
2152. Minimum Number of Lines to Cover PointsVideoPremium
Solution42.9%Medium
Array, Backtracking +6· 1 company
2154. Keep Multiplying Found Values by TwoVideo
Solution75.1%Easy
Array, Hash Table +2· 4 companies
2166. Design BitsetVideo
Solution32.7%Medium
Array, Design +2
Showing 351–400 of 797