1458.Max Dot Product of Two Subsequences
HardArrayDynamic Programming69.4% acceptance5 companiesVideo
2,120 results
1460.Make Two Arrays Equal by Reversing Subarrays
EasyArrayHash TableSorting75.9% acceptance4 companiesVideo
1463.Cherry Pickup II
HardArrayDynamic ProgrammingMatrix72.4% acceptance7 companiesVideo
1464.Maximum Product of Two Elements in an Array
EasyArrayHeap (Priority Queue)Sorting84.7% acceptance7 companiesVideo
1465.Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts
MediumArrayGreedySorting41.1% acceptance4 companiesVideo
1467.Probability of a Two Boxes Having The Same Number of Distinct Balls
HardArrayBacktrackingCombinatorics61.7% acceptanceVideo
1470.Shuffle the Array
EasyArray88.7% acceptance6 companiesVideo
1471.The k Strongest Values in an Array
MediumArraySortingTwo Pointers62.6% acceptance1 companyVideo
1472.Design Browser History
MediumArrayData StreamDesign78.3% acceptance13 companiesVideo
1473.Paint House III
HardArrayDynamic Programming60.9% acceptance3 companiesVideo
1475.Final Prices With a Special Discount in a Shop
EasyArrayMonotonic StackStack84.1% acceptance7 companiesVideo
1476.Subrectangle Queries
MediumArrayDesignMatrix86.3% acceptance3 companiesVideo
1477.Find Two Non-overlapping Sub-arrays Each With Target Sum
MediumArrayBinary SearchDynamic Programming49.5% acceptance1 companyVideo
1478.Allocate Mailboxes
HardArrayDynamic ProgrammingMath57.1% acceptance4 companiesVideo
1480.Running Sum of 1d Array
EasyArrayPrefix Sum86.9% acceptance6 companiesVideo
1481.Least Number of Unique Integers after K Removals
MediumArrayCountingGreedy63.8% acceptance7 companiesVideo
1482.Minimum Number of Days to Make m Bouquets
MediumArrayBinary Search56.9% acceptance9 companiesVideo
1487.Making File Names Unique
MediumArrayHash TableString38.5% acceptance1 companyVideo
1488.Avoid Flood in The City
MediumArrayBinary SearchGreedy39.0% acceptance6 companiesVideo
1491.Average Salary Excluding the Minimum and Maximum Salary
EasyArraySorting63.5% acceptance1 companyVideo
1493.Longest Subarray of 1's After Deleting One Element
MediumArrayDynamic ProgrammingSliding Window71.7% acceptance8 companiesVideo
1497.Check If Array Pairs Are Divisible by k
MediumArrayCountingHash Table46.2% acceptance8 companiesVideo
1498.Number of Subsequences That Satisfy the Given Sum Condition
MediumArrayBinary SearchSorting49.2% acceptance6 companiesVideo
1499.Max Value of Equation
HardArrayHeap (Priority Queue)Monotonic Queue45.0% acceptance1 companyVideo
1502.Can Make Arithmetic Progression From Sequence
EasyArraySorting68.9% acceptance5 companiesVideo
1503.Last Moment Before All Ants Fall Out of a Plank
MediumArrayBrainteaserSimulation68.3% acceptance1 companyVideo
1504.Count Submatrices With All Ones
MediumArrayDynamic ProgrammingMatrix71.0% acceptance4 companiesVideo
1508.Range Sum of Sorted Subarray Sums
MediumArrayBinary SearchSorting63.2% acceptance3 companiesVideo
1509.Minimum Difference Between Largest and Smallest Value in Three Moves
MediumArrayGreedySorting59.2% acceptance2 companiesVideo
1512.Number of Good Pairs
EasyArrayCountingHash Table89.9% acceptance10 companiesVideo
1514.Path with Maximum Probability
MediumArrayGraphHeap (Priority Queue)65.9% acceptance5 companiesVideo
1515.Best Position for a Service Centre
HardArrayGeometryMath35.8% acceptance1 companyVideo
1521.Find a Value of a Mysterious Function Closest to Target
HardArrayBinary SearchBit Manipulation48.3% acceptance1 companyVideo
1524.Number of Sub-arrays With Odd Sum
MediumArrayDynamic ProgrammingMath55.7% acceptance6 companiesVideo
1526.Minimum Number of Increments on Subarrays to Form a Target Array
HardArrayDynamic ProgrammingGreedy78.2% acceptance7 companiesVideo
1528.Shuffle String
EasyArrayString85.5% acceptance2 companiesVideo
1533.Find the Index of the Large Integer
MediumArrayBinary SearchInteractive56.7% acceptance1 companyPremium elsewhere, free hereVideo
1534.Count Good Triplets
EasyArrayEnumeration85.5% acceptance5 companiesVideo
1535.Find the Winner of an Array Game
MediumArraySimulation56.8% acceptance4 companiesVideo
1536.Minimum Swaps to Arrange a Binary Grid
MediumArrayGreedyMatrix70.1% acceptance2 companiesVideo
1537.Get the Maximum Score
HardArrayDynamic ProgrammingGreedy41.5% acceptance5 companiesVideo
1538.Guess the Majority in a Hidden Array
MediumArrayInteractiveMath68.8% acceptance1 companyPremium elsewhere, free hereVideo
1539.Kth Missing Positive Number
EasyArrayBinary Search63.9% acceptance9 companiesVideo
1546.Maximum Number of Non-Overlapping Subarrays With Sum Equals Target
MediumArrayGreedyHash Table49.4% acceptance1 companyVideo
1547.Minimum Cost to Cut a Stick
HardArrayDynamic ProgrammingSorting63.5% acceptance8 companiesVideo
1550.Three Consecutive Odds
EasyArray69.3% acceptance5 companiesVideo
1552.Magnetic Force Between Two Balls
MediumArrayBinary SearchSorting72.6% acceptance9 companiesVideo
1558.Minimum Numbers of Function Calls to Make Target Array
MediumArrayBit ManipulationGreedy62.9% acceptance1 companyVideo
1559.Detect Cycles in 2D Grid
MediumArrayBreadth-First SearchDepth-First Search63.2% acceptance6 companiesVideo
1560.Most Visited Sector in a Circular Track
EasyArraySimulation59.9% acceptance2 companiesVideo
Showing 701–750 of 2,120
How to use these solutions
Each solution breaks the problem into approaches, usually from brute force to the best one, and explains why each works. Code comes in Python, Java, C++ and other languages. Knowing why an approach works matters more in an interview than remembering the code.
- Try the problem first. Give it at least 20 minutes before you open the solution.
- Read every approach. The brute force shows you the problem; the faster ones show the pattern.
- Check the complexity. Note the time and space of each approach and what makes the difference.
- Write it yourself. Close the solution and code it from memory in the editor.
- Come back in a week. Solving it again later is what makes the pattern stick.