Skip to content

For employers Sign in

Make and follow sheets.Sign in

Problems

985 problems

Has video Premium only Reset

Array578 Dynamic Programming332 String191 Math187 Binary Search136 Hash Table134 Sorting106 Greedy104 Bit Manipulation103 Graph96 Depth-First Search91 Heap (Priority Queue)78 Prefix Sum77 Matrix75 Breadth-First Search71 All topics

Hard · 985 results

Sign in to see which of these you have solved.Sign in

TitleSolutionAcceptDifficultyTopics

1912. Design Movie Rental SystemVideo

Solution62.5%Hard

Array, Design +3· 2 companies

1916. Count Ways to Build Rooms in an Ant ColonyVideo

Solution52.4%Hard

Combinatorics, Dynamic Programming +4· 1 company

1917. Leetcodify Friends RecommendationsVideoPremium

Solution29.0%Hard

Database· 1 company

1919. Leetcodify Similar FriendsVideoPremium

Solution43.5%Hard

Database· 1 company

1923. Longest Common SubpathVideo

Solution30.7%Hard

Array, Binary Search +3· 1 company

1924. Erect the Fence IIVideoPremium

–49.4%Hard

Array, Geometry +1· 1 company

1928. Minimum Cost to Reach Destination in TimeVideo

Solution42.6%Hard

Array, Dynamic Programming +1· 6 companies

1931. Painting a Grid With Three Different ColorsVideo

Solution77.2%Hard

Dynamic Programming· 7 companies

1932. Merge BSTs to Create Single BSTVideo

Solution40.3%Hard

Binary Search, Binary Tree +3· 3 companies

1938. Maximum Genetic Difference QueryVideo

Solution48.6%Hard

Array, Bit Manipulation +3· 1 company

1944. Number of Visible People in a QueueVideo

Solution73.3%Hard

Array, Monotonic Stack +1· 17 companies

1948. Delete Duplicate Folders in SystemVideo

Solution77.7%Hard

Array, Hash Function +3· 6 companies

1955. Count Number of Special SubsequencesVideo

Solution53.4%Hard

Array, Dynamic Programming· 1 company

1956. Minimum Time For K Virus Variants to SpreadVideoPremium

–49.5%Hard

Array, Binary Search +3

1960. Maximum Product of the Length of Two Palindromic SubstringsVideo

Solution32.1%Hard

Hash Function, Rolling Hash +1

1964. Find the Longest Valid Obstacle Course at Each PositionVideo

Solution62.8%Hard

Array, Binary Indexed Tree +1· 1 company

1970. Last Day Where You Can Still CrossVideo

Solution68.7%Hard

Array, Binary Search +4· 4 companies

1972. First and Last Call On the Same DayVideoPremium

Solution50.7%Hard

Database· 1 company

1977. Number of Ways to Separate NumbersVideo

Solution21.7%Hard

Dynamic Programming, String +1· 1 company

1982. Find Array Given Subset SumsVideo

Solution49.7%Hard

Array, Divide and Conquer· 1 company

1987. Number of Unique Good SubsequencesVideo

Solution52.7%Hard

Dynamic Programming, String· 2 companies

1994. The Number of Good SubsetsVideo

Solution37.8%Hard

Array, Bit Manipulation +3· 2 companies

1998. GCD Sort of an ArrayVideo

Solution51.3%Hard

Array, Math +3· 1 company

2003. Smallest Missing Genetic Value in Each SubtreeVideo

Solution48.4%Hard

Depth-First Search, Dynamic Programming +2

2004. The Number of Seniors and Juniors to Join the CompanyVideoPremium

Solution46.6%Hard

2005. Subtree Removal Game with Fibonacci TreeVideoPremium

–54.9%Hard

Binary Tree, Dynamic Programming +3· 1 company

2009. Minimum Number of Operations to Make Array ContinuousVideo

Solution52.0%Hard

Array, Binary Search +2· 5 companies

2010. The Number of Seniors and Juniors to Join the Company IIVideoPremium

Solution66.2%Hard

2014. Longest Subsequence Repeated k TimesVideo

Solution71.3%Hard

Backtracking, Counting +3· 3 companies

2019. The Score of Students Solving Math ExpressionVideo

Solution34.8%Hard

Array, Dynamic Programming +4· 2 companies

2025. Maximum Number of Ways to Partition an ArrayVideo

Solution36.2%Hard

Array, Counting +3· 2 companies

2030. Smallest K-Length Subsequence With Occurrences of a LetterVideo

Solution40.0%Hard

Greedy, Monotonic Stack +2· 1 company

2035. Partition Array Into Two Arrays to Minimize Sum DifferenceVideo

Solution24.4%Hard

Array, Binary Search +5· 9 companies

2040. Kth Smallest Product of Two Sorted ArraysVideo

Solution48.8%Hard

Array, Binary Search· 5 companies

2045. Second Minimum Time to Reach DestinationVideo

Solution62.3%Hard

Breadth-First Search, Graph +1· 1 company

2050. Parallel Courses IIIVideo

Solution67.0%Hard

Array, Dynamic Programming +2· 9 companies

2056. Number of Valid Move Combinations On ChessboardVideo

Solution48.7%Hard

Array, Backtracking +2· 2 companies

2060. Check if an Original String Exists Given Two Encoded StringsVideo

Solution43.6%Hard

Dynamic Programming, String· 2 companies

2065. Maximum Path Quality of a GraphVideo

Solution63.1%Hard

Array, Backtracking +1· 5 companies

2071. Maximum Number of Tasks You Can AssignVideo

Solution50.1%Hard

Array, Binary Search +4· 5 companies

2076. Process Restricted Friend RequestsVideo

Solution61.7%Hard

Graph, Union Find· 2 companies

2081. Sum of k-Mirror NumbersVideo

Solution63.7%Hard

Enumeration, Math· 5 companies

2088. Count Fertile Pyramids in a LandVideo

Solution66.5%Hard

Array, Dynamic Programming +1· 1 company

2092. Find All People With SecretVideo

Solution48.4%Hard

Breadth-First Search, Depth-First Search +3· 3 companies

2097. Valid Arrangement of PairsVideo

–66.5%Hard

Depth-First Search, Eulerian Circuit +1· 3 companies

2102. Sequentially Ordinal Rank TrackerVideo

Solution61.5%Hard

Data Stream, Design +2· 1 company

2106. Maximum Fruits Harvested After at Most K StepsVideo

Solution61.0%Hard

Array, Binary Search +2· 5 companies

2111. Minimum Operations to Make the Array K-IncreasingVideo

Solution41.1%Hard

Array, Binary Search· 1 company

2117. Abbreviating the Product of a RangeVideo

Solution25.0%Hard

Math· 1 company

2118. Build the EquationVideoPremium

Solution57.3%Hard

Showing 401–450 of 985