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332 problems

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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 · 332 results

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TitleSolutionAcceptDifficultyTopics

1449. Form Largest Integer With Digits That Add up to TargetVideo

Solution50.2%Hard

Array, Dynamic Programming· 1 company

1458. Max Dot Product of Two SubsequencesVideo

Solution69.4%Hard

Array, Dynamic Programming· 5 companies

1463. Cherry Pickup IIVideo

Solution72.4%Hard

Array, Dynamic Programming +1· 7 companies

1467. Probability of a Two Boxes Having The Same Number of Distinct BallsVideo

Solution61.7%Hard

Array, Backtracking +4

1473. Paint House IIIVideo

Solution60.9%Hard

Array, Dynamic Programming· 3 companies

1478. Allocate MailboxesVideo

Solution57.1%Hard

Array, Dynamic Programming +2· 4 companies

1483. Kth Ancestor of a Tree NodeVideo

Solution39.7%Hard

Binary Search, Breadth-First Search +4· 3 companies

1494. Parallel Courses IIVideo

Solution31.3%Hard

Bit Manipulation, Bitmask +2· 3 companies

1510. Stone Game IVVideo

Solution65.2%Hard

Dynamic Programming, Game Theory +1· 1 company

1526. Minimum Number of Increments on Subarrays to Form a Target ArrayVideo

Solution78.2%Hard

Array, Dynamic Programming +3· 7 companies

1531. String Compression IIVideo

Solution52.2%Hard

Dynamic Programming, String· 5 companies

1537. Get the Maximum ScoreVideo

Solution41.5%Hard

Array, Dynamic Programming +2· 5 companies

1547. Minimum Cost to Cut a StickVideo

Solution63.5%Hard

Array, Dynamic Programming +1· 8 companies

1548. The Most Similar Path in a GraphVideoPremium

Solution59.2%Hard

Dynamic Programming, Graph· 1 company

1553. Minimum Number of Days to Eat N OrangesVideo

Solution36.2%Hard

Dynamic Programming, Memoization· 1 company

1563. Stone Game VVideo

Solution58.8%Hard

Array, Dynamic Programming +2· 1 company

1569. Number of Ways to Reorder Array to Get Same BSTVideo

Solution65.8%Hard

Array, Binary Search Tree +8· 2 companies

1575. Count All Possible RoutesVideo

Solution65.1%Hard

Array, Dynamic Programming +1

1595. Minimum Cost to Connect Two Groups of PointsVideo

Solution50.9%Hard

Array, Bit Manipulation +3· 1 company

1611. Minimum One Bit Operations to Make Integers ZeroVideo

Solution78.5%Hard

Bit Manipulation, Dynamic Programming +1· 5 companies

1617. Count Subtrees With Max Distance Between CitiesVideo

Solution67.4%Hard

Bit Manipulation, Bitmask +3

1639. Number of Ways to Form a Target String Given a DictionaryVideo

Solution56.6%Hard

Array, Dynamic Programming +1· 9 companies

1643. Kth Smallest InstructionsVideo

Solution44.7%Hard

Array, Combinatorics +2· 1 company

1655. Distribute Repeating IntegersVideo

Solution41.1%Hard

Array, Backtracking +3· 1 company

1659. Maximize Grid HappinessVideo

Solution41.6%Hard

Bit Manipulation, Bitmask +2· 1 company

1671. Minimum Number of Removals to Make Mountain ArrayVideo

Solution55.0%Hard

Array, Binary Search +2· 6 companies

1681. Minimum IncompatibilityVideo

Solution41.8%Hard

Array, Bit Manipulation +2· 1 company

1687. Delivering Boxes from Storage to PortsVideo

Solution40.1%Hard

Array, Dynamic Programming +5· 1 company

1691. Maximum Height by Stacking Cuboids Video

Solution62.4%Hard

Array, Dynamic Programming +1· 4 companies

1692. Count Ways to Distribute CandiesVideoPremium

Solution62.7%Hard

Dynamic Programming· 1 company

1714. Sum Of Special Evenly-Spaced Elements In ArrayVideoPremium

Solution49.9%Hard

Array, Dynamic Programming· 1 company

1723. Find Minimum Time to Finish All JobsVideo

Solution46.7%Hard

Array, Backtracking +3· 5 companies

1728. Cat and Mouse IIVideo

Solution40.4%Hard

Array, Dynamic Programming +6· 1 company

1735. Count Ways to Make Array With ProductVideo

Solution55.8%Hard

Array, Combinatorics +3· 1 company

1745. Palindrome Partitioning IVVideo

Solution45.8%Hard

Dynamic Programming, String· 1 company

1751. Maximum Number of Events That Can Be Attended IIVideo

Solution63.6%Hard

Array, Binary Search +2· 8 companies

1755. Closest Subsequence SumVideo

Solution45.3%Hard

Array, Bit Manipulation +3· 3 companies

1770. Maximum Score from Performing Multiplication OperationsVideo

Solution43.2%Hard

Array, Dynamic Programming· 1 company

1771. Maximize Palindrome Length From SubsequencesVideo

Solution39.0%Hard

Dynamic Programming, String· 1 company

1787. Make the XOR of All Segments Equal to ZeroVideo

Solution41.1%Hard

Array, Bit Manipulation +1· 2 companies

1799. Maximize Score After N OperationsVideo

Solution57.8%Hard

Array, Backtracking +5· 2 companies

1815. Maximum Number of Groups Getting Fresh DonutsVideo

Solution41.7%Hard

Array, Bit Manipulation +3· 1 company

1857. Largest Color Value in a Directed GraphVideo

Solution57.3%Hard

Counting, Dynamic Programming +4· 5 companies

1866. Number of Ways to Rearrange Sticks With K Sticks VisibleVideo

Solution62.7%Hard

Combinatorics, Dynamic Programming +1· 1 company

1872. Stone Game VIIIVideo

Solution75.2%Hard

Array, Dynamic Programming +3· 1 company

1879. Minimum XOR Sum of Two ArraysVideo

Solution52.0%Hard

Array, Bit Manipulation +2· 1 company

1883. Minimum Skips to Arrive at Meeting On TimeVideo

Solution38.9%Hard

Array, Dynamic Programming· 1 company

1896. Minimum Cost to Change the Final Value of ExpressionVideo

Solution50.0%Hard

Dynamic Programming, Math +2· 1 company

1900. The Earliest and Latest Rounds Where Players CompeteVideo

Solution72.1%Hard

Dynamic Programming, Memoization· 4 companies

1916. Count Ways to Build Rooms in an Ant ColonyVideo

Solution52.4%Hard

Combinatorics, Dynamic Programming +4· 1 company

Showing 101–150 of 332