Oracle Array Questions

163 array problems asked at Oracle interviews

Easy (25)Medium (107)Hard (31)

Questions

TitleDifficulty
Number of IslandsMedium
Two SumEasy
Group AnagramsMedium
Top K Frequent ElementsMedium
Sliding Window MaximumHard
Merge IntervalsMedium
Meeting Rooms IIMedium
Spiral MatrixMedium
Search in Rotated Sorted ArrayMedium
Asteroid CollisionMedium
Container With Most WaterMedium
3SumMedium
Trapping Rain WaterHard
Longest Consecutive SequenceMedium
Minimum Absolute DifferenceEasy
Rotting OrangesMedium
Maximum SubarrayMedium
Count Pairs Of Similar StringsEasy
Maximize Value of Function in a Ball Passing GameHard
Koko Eating BananasMedium
Best Time to Buy and Sell StockEasy
Lucky Numbers in a MatrixEasy
Minimize Length of Array Using OperationsMedium
Count Distinct Numbers on BoardEasy
Count Ways to Group Overlapping RangesMedium
Longest Common PrefixEasy
Sort ColorsMedium
Maximum Number of Events That Can Be AttendedMedium
Median of Two Sorted ArraysHard
Word Squares IIMedium
Coin ChangeMedium
First Missing PositiveHard
Kth Largest Element in an ArrayMedium
Contiguous ArrayMedium
Majority ElementEasy
Insert Delete GetRandom O(1)Medium
Degree of an ArrayEasy
Task SchedulerMedium
Count the Number of Infection SequencesHard
Product of Array Except SelfMedium
Longest Mountain in ArrayMedium
Diagonal TraverseMedium
Find First and Last Position of Element in Sorted ArrayMedium
Search a 2D MatrixMedium
Gas StationMedium
Word Break IIHard
Move ZeroesEasy
Longest Increasing SubsequenceMedium
Subarray Sum Equals KMedium
Maximum Profit From Trading StocksMedium
N-QueensHard
Pour WaterMedium
Maximal SquareMedium
Search a 2D Matrix IIMedium
Max Area of IslandMedium
Set Matrix ZeroesMedium
Word SearchMedium
Meeting RoomsEasy
Top K Frequent WordsMedium
Number of Distinct IslandsMedium
Largest NumberMedium
Next PermutationMedium
Number of Visible People in a QueueHard
Rotate ImageMedium
Jump GameMedium
Design HashMapEasy
Pairs of Songs With Total Durations Divisible by 60Medium
Maximum Profit in Job SchedulingHard
Search Suggestions SystemMedium
Single Element in a Sorted ArrayMedium
Kth Smallest Element in a Sorted MatrixMedium
Remove Duplicates from Sorted ArrayEasy
PermutationsMedium
Capacity To Ship Packages Within D DaysMedium
Combination Sum IIMedium
Sort an ArrayMedium
Maximum Good People Based on StatementsHard
Find the Smallest Divisor Given a ThresholdMedium
House RobberMedium
Find the Winner of the Circular GameMedium
Surrounded RegionsMedium
Kill ProcessMedium
Subarray Product Less Than KMedium
Minimum Array SumMedium
Open the LockMedium
Invalid TransactionsMedium
Two Sum II - Input Array Is SortedMedium
Find K Pairs with Smallest SumsMedium
Merge Sorted ArrayEasy
Minimum Size Subarray SumMedium
Island PerimeterEasy
Rearranging FruitsHard
Word BreakMedium
Contains DuplicateEasy
Next Greater Element IEasy
Daily TemperaturesMedium
Calculate Amount Paid in TaxesEasy
Non-overlapping IntervalsMedium
TriangleMedium
Minimum Cost to Make Array EqualHard
CandyHard
Maximum Earnings From TaxiMedium
Valid SudokuMedium
Frog JumpHard
Meeting Rooms IIIHard
Find Minimum in Rotated Sorted ArrayMedium
Number of Closed IslandsMedium
Avoid Flood in The CityMedium
Jump Game IIMedium
Insert IntervalMedium
Find the Duplicate NumberMedium
Max Consecutive Ones IIIMedium
Rotate ArrayMedium
Text JustificationHard
Sort Array by Increasing FrequencyEasy
Find Peak ElementMedium
Count Servers that CommunicateMedium
Last Stone WeightEasy
Minimum Cost to Cut a StickHard
Split Array Largest SumHard
Minimum Operations to Halve Array SumMedium
Binary SearchEasy
Count of Range SumHard
My Calendar IMedium
Maximize Greatness of an ArrayMedium
Maximum Candies Allocated to K ChildrenMedium
Find All Duplicates in an ArrayMedium
Maximum Employees to Be Invited to a MeetingHard
Plates Between CandlesMedium
Create Maximum NumberHard
SubsetsMedium
Minimum Sideway JumpsMedium
Encode and Decode StringsMedium
Largest Divisible SubsetMedium
Word Search IIHard
Sparse Matrix MultiplicationMedium
Minimize Maximum of ArrayMedium
3Sum SmallerMedium
Generate ScheduleMedium
Count Number of Nice SubarraysMedium
Minimum Cost Homecoming of a Robot in a GridMedium
Missing NumberEasy
Evaluate Reverse Polish NotationMedium
Design Circular QueueMedium
Minimum Number of Increments on Subarrays to Form a Target ArrayHard
Collect Coins in a TreeHard
K Closest Points to OriginMedium
Subarrays with K Different IntegersHard
Kth Missing Positive NumberEasy
Maximum Size Subarray Sum Equals kMedium
Trapping Rain Water IIHard
Find in Mountain ArrayHard
Single Number IIIMedium
Largest Rectangle in HistogramHard
Can Place FlowersEasy
Merge Operations to Turn Array Into a PalindromeMedium
Sudoku SolverHard
Least Number of Unique Integers after K RemovalsMedium
Combination SumMedium
Bus RoutesHard
Flood FillEasy
Design Hit CounterMedium
Simple Bank SystemMedium

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