Citadel Array Questions

62 array problems asked at Citadel interviews

Easy (2)Medium (38)Hard (22)

Questions

TitleDifficulty
Longest Non-decreasing Subarray From Two ArraysMedium
Delete and EarnMedium
Sliding Window MaximumHard
Minimum Equal Sum of Two Arrays After Replacing ZerosMedium
Minimum Operations to Make Numbers Non-positiveHard
Maximum Total Damage With Spell CastingMedium
Best Position for a Service CentreHard
Maximum Length of Repeated SubarrayMedium
Minimum Costs Using the Train LineHard
Evaluate DivisionMedium
First Completely Painted Row or ColumnMedium
Merge IntervalsMedium
Longest String ChainMedium
Best Time to Buy and Sell StockEasy
Find the Duplicate NumberMedium
Insert Delete GetRandom O(1)Medium
Evaluate Reverse Polish NotationMedium
Parallel Courses IIIHard
Number of IslandsMedium
Length of Longest Subarray With at Most K FrequencyMedium
Sudoku SolverHard
Meeting SchedulerMedium
Employee Free TimeHard
Group AnagramsMedium
PermutationsMedium
Search Suggestions SystemMedium
Trapping Rain WaterHard
N-QueensHard
Best Time to Buy and Sell Stock IIMedium
Design Circular QueueMedium
Combination SumMedium
Best Time to Buy and Sell Stock IIIHard
Find Servers That Handled Most Number of RequestsHard
Design Excel Sum FormulaHard
Median of Two Sorted ArraysHard
Maximal SquareMedium
Alien DictionaryHard
Longest Increasing Path in a MatrixHard
House RobberMedium
Transform to ChessboardHard
3SumMedium
Design Front Middle Back QueueMedium
Word SearchMedium
Moving Average from Data StreamEasy
Asteroid CollisionMedium
Insert Delete GetRandom O(1) - Duplicates allowedHard
Count Number of Maximum Bitwise-OR SubsetsMedium
Search a 2D Matrix IIMedium
Container With Most WaterMedium
Paint HouseMedium
Max Points on a LineHard
Rank Transform of a MatrixHard
Longest Increasing SubsequenceMedium
Rotting OrangesMedium
The Skyline ProblemHard
Permutations IIMedium
Subarray Sums Divisible by KMedium
Bus RoutesHard
Best Time to Buy and Sell Stock IVHard
Best Time to Buy and Sell Stock with Transaction FeeMedium
Open the LockMedium
Koko Eating BananasMedium

Showing 62 questions