1649.Create Sorted Array through Instructions
HardArrayBinary Indexed TreeBinary Search42.7% acceptance2 companiesVideo
2,120 results
1652.Defuse the Bomb
EasyArraySliding Window79.2% acceptance5 companiesVideo
1654.Minimum Jumps to Reach Home
MediumArrayBreadth-First SearchDynamic Programming30.7% acceptance3 companiesVideo
1655.Distribute Repeating Integers
HardArrayBacktrackingBit Manipulation41.1% acceptance1 companyVideo
1656.Design an Ordered Stream
EasyArrayData StreamDesign82.6% acceptance3 companiesVideo
1658.Minimum Operations to Reduce X to Zero
MediumArrayBinary SearchHash Table45.0% acceptance4 companiesVideo
1662.Check If Two String Arrays are Equivalent
EasyArrayString86.2% acceptance3 companiesVideo
1664.Ways to Make a Fair Array
MediumArrayPrefix Sum67.8% acceptance7 companiesVideo
1665.Minimum Initial Energy to Finish Tasks
HardArrayGreedySorting76.5% acceptance5 companiesVideo
1670.Design Front Middle Back Queue
MediumArrayData StreamDesign59.1% acceptance3 companiesVideo
1671.Minimum Number of Removals to Make Mountain Array
HardArrayBinary SearchDynamic Programming55.0% acceptance6 companiesVideo
1672.Richest Customer Wealth
EasyArrayMatrix88.9% acceptance5 companiesVideo
1673.Find the Most Competitive Subsequence
MediumArrayGreedyMonotonic Stack53.4% acceptance2 companiesVideo
1674.Minimum Moves to Make Array Complementary
MediumArrayHash TablePrefix Sum65.2% acceptance5 companiesVideo
1675.Minimize Deviation in Array
HardArrayGreedyHeap (Priority Queue)54.0% acceptance1 companyVideo
1679.Max Number of K-Sum Pairs
MediumArrayHash TableSorting57.5% acceptance7 companiesVideo
1681.Minimum Incompatibility
HardArrayBit ManipulationBitmask41.8% acceptance1 companyVideo
1684.Count the Number of Consistent Strings
EasyArrayBit ManipulationCounting88.1% acceptance3 companiesVideo
1685.Sum of Absolute Differences in a Sorted Array
MediumArrayMathPrefix Sum68.2% acceptance4 companiesVideo
1686.Stone Game VI
MediumArrayGame TheoryGreedy62.0% acceptanceVideo
1687.Delivering Boxes from Storage to Ports
HardArrayDynamic ProgrammingHeap (Priority Queue)40.1% acceptance1 companyVideo
1690.Stone Game VII
MediumArrayDynamic ProgrammingGame Theory59.4% acceptance2 companiesVideo
1691.Maximum Height by Stacking Cuboids
HardArrayDynamic ProgrammingSorting62.4% acceptance4 companiesVideo
1695.Maximum Erasure Value
MediumArrayHash TableSliding Window64.2% acceptance7 companiesVideo
1696.Jump Game VI
MediumArrayDynamic ProgrammingHeap (Priority Queue)46.4% acceptance6 companiesVideo
1697.Checking Existence of Edge Length Limited Paths
HardArrayGraphSorting63.8% acceptance3 companiesVideo
1700.Number of Students Unable to Eat Lunch
EasyArrayQueueSimulation80.1% acceptance5 companiesVideo
1701.Average Waiting Time
MediumArraySimulation73.1% acceptance3 companiesVideo
1703.Minimum Adjacent Swaps for K Consecutive Ones
HardArrayGreedyPrefix Sum42.8% acceptance4 companiesVideo
1705.Maximum Number of Eaten Apples
MediumArrayGreedyHeap (Priority Queue)44.2% acceptance1 companyVideo
1706.Where Will the Ball Fall
MediumArrayMatrixSimulation72.5% acceptance1 companyVideo
1707.Maximum XOR With an Element From Array
HardArrayBit ManipulationTrie59.6% acceptance1 companyVideo
1708.Largest Subarray Length K
EasyArrayGreedy65.7% acceptance1 companyPremium elsewhere, free hereVideo
1710.Maximum Units on a Truck
EasyArrayGreedySorting75.3% acceptance9 companiesVideo
1711.Count Good Meals
MediumArrayHash Table33.3% acceptance4 companiesVideo
1712.Ways to Split Array Into Three Subarrays
MediumArrayBinary SearchPrefix Sum34.2% acceptance3 companiesVideo
1713.Minimum Operations to Make a Subsequence
HardArrayBinary SearchGreedy50.3% acceptance2 companiesVideo
1714.Sum Of Special Evenly-Spaced Elements In Array
HardArrayDynamic Programming49.9% acceptance1 companyPremium elsewhere, free hereVideo
1718.Construct the Lexicographically Largest Valid Sequence
MediumArrayBacktracking72.7% acceptance5 companiesVideo
1720.Decode XORed Array
EasyArrayBit Manipulation87.3% acceptance1 companyVideo
1722.Minimize Hamming Distance After Swap Operations
MediumArrayDepth-First SearchUnion Find69.6% acceptance3 companiesVideo
1723.Find Minimum Time to Finish All Jobs
HardArrayBacktrackingBit Manipulation46.7% acceptance5 companiesVideo
1725.Number Of Rectangles That Can Form The Largest Square
EasyArray79.5% acceptance1 companyVideo
1726.Tuple with Same Product
MediumArrayCountingHash Table70.1% acceptance5 companiesVideo
1727.Largest Submatrix With Rearrangements
MediumArrayGreedyMatrix80.3% acceptance6 companiesVideo
1728.Cat and Mouse II
HardArrayDynamic ProgrammingGame Theory40.4% acceptance1 companyVideo
1730.Shortest Path to Get Food
MediumArrayBreadth-First SearchMatrix57.7% acceptance2 companiesPremium elsewhere, free hereVideo
1732.Find the Highest Altitude
EasyArrayPrefix Sum84.7% acceptance7 companiesVideo
1733.Minimum Number of People to Teach
MediumArrayGreedyHash Table67.7% acceptance4 companiesVideo
1734.Decode XORed Permutation
MediumArrayBit Manipulation67.0% acceptance1 companyVideo
Showing 801–850 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.