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Array1,212 Hash Table473 String437 Math331 Greedy330 Dynamic Programming327 Sorting302 Depth-First Search208 Binary Search189 Breadth-First Search166 Matrix163 Tree158 Prefix Sum155 Two Pointers150 Database137 All topics

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TitleSolutionAcceptDifficultyTopics

2049. Count Nodes With the Highest ScoreVideo

Solution52.6%Medium

Array, Binary Tree +2· 3 companies

2051. The Category of Each Member in the StoreVideoPremium

Solution70.2%Medium

2052. Minimum Cost to Separate Sentence Into RowsVideoPremium

Solution50.1%Medium

Array, Dynamic Programming· 1 company

2054. Two Best Non-Overlapping EventsVideo

Solution64.0%Medium

Array, Binary Search +3· 7 companies

2055. Plates Between CandlesVideo

Solution47.4%Medium

Array, Binary Search +2· 3 companies

2058. Find the Minimum and Maximum Number of Nodes Between Critical PointsVideo

Solution72.9%Medium

Linked List· 6 companies

2059. Minimum Operations to Convert NumberVideo

Solution52.3%Medium

Array, Breadth-First Search· 1 company

2061. Number of Spaces Cleaning Robot CleanedVideoPremium

Solution64.3%Medium

Array, Matrix +1· 2 companies

2063. Vowels of All SubstringsVideo

Solution55.3%Medium

Combinatorics, Dynamic Programming +2· 2 companies

2064. Minimized Maximum of Products Distributed to Any StoreVideo

Solution63.1%Medium

Array, Binary Search +1· 5 companies

2066. Account BalanceVideoPremium

Solution82.1%Medium

2067. Number of Equal Count SubstringsVideoPremium

Solution45.1%Medium

Counting, Prefix Sum +1· 1 company

2069. Walking Robot Simulation IIVideo

Solution43.2%Medium

Design, Simulation· 2 companies

2070. Most Beautiful Item for Each QueryVideo

Solution62.2%Medium

Array, Binary Search +1· 4 companies

2074. Reverse Nodes in Even Length GroupsVideo

Solution65.6%Medium

Linked List· 8 companies

2075. Decode the Slanted CiphertextVideo

Solution67.3%Medium

Simulation, String· 3 companies

2077. Paths in Maze That Lead to Same RoomVideoPremium

Solution56.7%Medium

Graph· 1 company

2079. Watering PlantsVideo

Solution79.9%Medium

Array, Simulation· 3 companies

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

2084. Drop Type 1 Orders for Customers With Type 0 OrdersVideoPremium

Solution86.9%Medium

2086. Minimum Number of Food Buckets to Feed the HamstersVideo

Solution48.1%Medium

Dynamic Programming, Greedy +1· 3 companies

2087. Minimum Cost Homecoming of a Robot in a GridVideo

Solution51.7%Medium

Array, Greedy· 3 companies

2090. K Radius Subarray AveragesVideo

Solution46.6%Medium

Array, Sliding Window· 4 companies

2091. Removing Minimum and Maximum From ArrayVideo

Solution67.5%Medium

2093. Minimum Cost to Reach City With DiscountsVideoPremium

Solution62.4%Medium

Graph, Heap (Priority Queue) +1· 2 companies

2095. Delete the Middle Node of a Linked ListVideo

Solution60.4%Medium

Linked List, Two Pointers· 7 companies

2096. Step-By-Step Directions From a Binary Tree Node to AnotherVideo

Solution56.3%Medium

Binary Tree, Depth-First Search +2· 6 companies

2098. Subsequence of Size K With the Largest Even SumVideoPremium

Solution35.5%Medium

Array, Greedy +1· 3 companies

2100. Find Good Days to Rob the BankVideo

Solution52.1%Medium

Array, Dynamic Programming +1· 2 companies

2101. Detonate the Maximum BombsVideo

Solution50.0%Medium

Array, Breadth-First Search +4· 7 companies

2104. Sum of Subarray RangesVideo

Solution61.6%Medium

Array, Monotonic Stack +1· 9 companies

2105. Watering Plants IIVideo

Solution48.8%Medium

Array, Simulation +1· 1 company

2107. Number of Unique Flavors After Sharing K CandiesVideoPremium

Solution62.4%Medium

Array, Hash Table +1· 2 companies

2109. Adding Spaces to a StringVideo

Solution71.8%Medium

Array, Simulation +2· 5 companies

2110. Number of Smooth Descent Periods of a StockVideo

Solution67.7%Medium

Array, Dynamic Programming +1· 3 companies

2112. The Airport With the Most TrafficVideoPremium

Solution71.9%Medium

2113. Elements in Array After Removing and Replacing ElementsVideoPremium

Solution69.1%Medium

2115. Find All Possible Recipes from Given SuppliesVideo

Solution56.8%Medium

Array, Graph +3· 10 companies

2116. Check if a Parentheses String Can Be ValidVideo

Solution45.1%Medium

Greedy, Stack +1· 7 companies

2120. Execution of All Suffix Instructions Staying in a GridVideo

Solution82.4%Medium

Simulation, String

2121. Intervals Between Identical ElementsVideo

Solution48.4%Medium

Array, Hash Table +1· 2 companies

2125. Number of Laser Beams in a BankVideo

Solution87.0%Medium

Array, Math +2· 2 companies

2126. Destroying AsteroidsVideo

Solution59.7%Medium

Array, Greedy +1· 1 company

2128. Remove All Ones With Row and Column FlipsVideoPremium

Solution76.2%Medium

Array, Bit Manipulation +2· 1 company

2130. Maximum Twin Sum of a Linked ListVideo

Solution83.2%Medium

Linked List, Stack +1· 6 companies

2131. Longest Palindrome by Concatenating Two Letter WordsVideo

Solution53.5%Medium

Array, Counting +3· 6 companies

2134. Minimum Swaps to Group All 1's Together IIVideo

Solution65.5%Medium

Array, Sliding Window· 10 companies

2135. Count Words Obtained After Adding a LetterVideo

Solution44.0%Medium

Array, Bit Manipulation +3· 1 company

2137. Pour Water Between Buckets to Make Water Levels EqualVideoPremium

Solution68.4%Medium

Array, Binary Search· 1 company

Showing 1,101–1,150 of 2,133