C

Coupang

49 questions tracked41 with solutions
πŸ”
Frequency scoreSorted highest β†’ lowest frequencyβœ“ Our Solution = we have a detailed walkthrough

Showing 49 of 49 questions

1
MediumSubsetsβœ“ Our Solution
100
ArrayBacktrackingBit Manipulation
2
MediumWord Breakβœ“ Our Solution
100
ArrayHash TableStringDynamic Programming+2
3
MediumDecode Stringβœ“ Our Solution
98
StringStackRecursion
4
MediumLongest Substring with At Most K Distinct Characters
96
Hash TableStringSliding Window
5
HardLFU Cacheβœ“ Our Solution
96
Hash TableLinked ListDesignDoubly-Linked List
6
HardRange Moduleβœ“ Our Solution
93
DesignSegment TreeOrdered Set
7
MediumSplit BST
93
TreeBinary Search TreeRecursionBinary Tree
8
EasyFind Pivot Indexβœ“ Our Solution
93
ArrayPrefix Sum
9
MediumLRU Cacheβœ“ Our Solution
93
Hash TableLinked ListDesignDoubly-Linked List
10
MediumCourse Scheduleβœ“ Our Solution
91
Depth-First SearchBreadth-First SearchGraphTopological Sort
11
HardDesign In-Memory File System
91
Hash TableStringDesignTrie+1
12
MediumUnique Paths IIβœ“ Our Solution
81
ArrayDynamic ProgrammingMatrix
13
MediumDesign Twitterβœ“ Our Solution
81
Hash TableLinked ListDesignHeap (Priority Queue)
14
MediumPossible Bipartitionβœ“ Our Solution
76
Depth-First SearchBreadth-First SearchUnion FindGraph
15
MediumShopping Offersβœ“ Our Solution
76
ArrayDynamic ProgrammingBacktrackingBit Manipulation+2
16
MediumLongest Repeating Substring
76
StringBinary SearchDynamic ProgrammingRolling Hash+2
17
MediumUnique Pathsβœ“ Our Solution
76
MathDynamic ProgrammingCombinatorics
18
HardRegular Expression Matchingβœ“ Our Solution
76
StringDynamic ProgrammingRecursion
19
MediumFind K Closest Elementsβœ“ Our Solution
70
ArrayTwo PointersBinary SearchSliding Window+2
20
MediumRemove K Digitsβœ“ Our Solution
70
StringStackGreedyMonotonic Stack
21
MediumLongest Substring Without Repeating Charactersβœ“ Our Solution
70
Hash TableStringSliding Window
22
MediumShortest Bridgeβœ“ Our Solution
70
ArrayDepth-First SearchBreadth-First SearchMatrix
23
HardLongest Duplicate Substringβœ“ Our Solution
70
StringBinary SearchSliding WindowRolling Hash+2
24
MediumDesign Hit Counter
63
ArrayBinary SearchDesignQueue+1
25
HardSliding Window Maximumβœ“ Our Solution
63
ArrayQueueSliding WindowHeap (Priority Queue)+1
26
MediumSearch a 2D Matrixβœ“ Our Solution
63
ArrayBinary SearchMatrix
27
MediumSnapshot Arrayβœ“ Our Solution
63
ArrayHash TableBinary SearchDesign
28
MediumSingle Element in a Sorted Arrayβœ“ Our Solution
63
ArrayBinary Search
29
MediumGroup Anagramsβœ“ Our Solution
63
ArrayHash TableStringSorting
30
MediumNumber of Distinct Islands
63
Hash TableDepth-First SearchBreadth-First SearchUnion Find+1
31
MediumBasic Calculator IIβœ“ Our Solution
63
MathStringStack
32
MediumCheapest Flights Within K Stopsβœ“ Our Solution
63
Dynamic ProgrammingDepth-First SearchBreadth-First SearchGraph+2
33
MediumNumber of Islandsβœ“ Our Solution
63
ArrayDepth-First SearchBreadth-First SearchUnion Find+1
34
HardWildcard Matchingβœ“ Our Solution
63
StringDynamic ProgrammingGreedyRecursion
35
HardDistinct Subsequencesβœ“ Our Solution
53
StringDynamic Programming
36
MediumBuildings With an Ocean View
53
ArrayStackMonotonic Stack
37
HardMaximum Number of Tasks You Can Assignβœ“ Our Solution
53
ArrayTwo PointersBinary SearchGreedy+3
38
MediumReorganize Stringβœ“ Our Solution
53
Hash TableStringGreedySorting+2
39
MediumKth Largest Element in an Arrayβœ“ Our Solution
53
ArrayDivide and ConquerSortingHeap (Priority Queue)+1
40
HardBus Routesβœ“ Our Solution
53
ArrayHash TableBreadth-First Search
41
EasySplit Strings by Separatorβœ“ Our Solution
53
ArrayString
42
HardNumber of Atomsβœ“ Our Solution
53
Hash TableStringStackSorting
43
HardFind Median from Data Streamβœ“ Our Solution
53
Two PointersDesignSortingHeap (Priority Queue)+1
44
MediumOpen the Lockβœ“ Our Solution
53
ArrayHash TableStringBreadth-First Search
45
MediumPacific Atlantic Water Flowβœ“ Our Solution
53
ArrayDepth-First SearchBreadth-First SearchMatrix
46
MediumSearch a 2D Matrix IIβœ“ Our Solution
53
ArrayBinary SearchDivide and ConquerMatrix
47
HardBasic Calculator III
53
MathStringStackRecursion
48
MediumIncreasing Triplet Subsequenceβœ“ Our Solution
53
ArrayGreedy
49
HardBasic Calculatorβœ“ Our Solution
53
MathStringStackRecursion