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78 questions tracked73 with solutions
Frequency scoreSorted highest β lowest frequencyβ Our Solution = we have a detailed walkthrough
Showing 78 of 78 questions
2Hash TableLinked ListDesignDoubly-Linked List
4TreeDepth-First SearchString MatchingBinary Tree+1
6HardMinimum Window Subsequence
StringDynamic ProgrammingSliding Window
9ArrayTwo PointersGreedySorting
10ArrayDepth-First SearchBreadth-First SearchUnion Find+1
11Hash TableStringBreadth-First Search
13ArrayHash TableStringSorting
15ArrayHash TableStringBreadth-First Search
16Depth-First SearchGraphEulerian Circuit
17ArrayDivide and ConquerSortingHeap (Priority Queue)+1
19ArrayStringBacktrackingTrie+1
20Depth-First SearchBreadth-First SearchGraphTopological Sort
22Depth-First SearchBreadth-First SearchGraphTopological Sort
23MediumMeeting Rooms II
ArrayTwo PointersGreedySorting+2
24MediumLongest Continuous Subarray With Absolute Diff Less Than or Equal to Limitβ Our Solution ArrayQueueSliding WindowHeap (Priority Queue)+2
25TreeBreadth-First SearchBinary Tree
26TreeDepth-First SearchBinary Search TreeBinary Tree
27ArrayStringDynamic ProgrammingDepth-First Search+1
28StringDynamic ProgrammingBacktracking
29ArrayBreadth-First SearchMatrix
31Dynamic ProgrammingTreeDepth-First SearchBinary Tree
33Hash TableStringSliding Window
37ArrayDynamic ProgrammingGreedy
38EasyMeeting Rooms
ArraySorting
41StringDynamic ProgrammingStack
42ArrayDynamic ProgrammingMatrix
43Linked ListDivide and ConquerHeap (Priority Queue)Merge Sort
44Dynamic ProgrammingTreeDepth-First SearchBinary Tree
48Hash TableTreeDepth-First SearchBreadth-First Search+2
49ArrayDynamic ProgrammingBacktrackingBit Manipulation+1
52ArrayBreadth-First SearchMatrix
53Hash TableStringBinary SearchDesign
54Two PointersStringDynamic Programming
55ArrayBinary SearchDivide and Conquer
58ArrayDivide and ConquerDynamic Programming
60TreeDepth-First SearchBinary Search TreeBinary Tree
61MediumNested List Weight Sum
Depth-First SearchBreadth-First Search
62ArrayHash TableDivide and ConquerSorting+4
63ArrayDynamic ProgrammingMatrix
64StringRolling HashString MatchingHash Function
65ArrayBinary SearchGreedySorting
67ArrayHash TableDivide and ConquerSorting+1
69ArrayTwo PointersBinary Search
70Hash TableStringGreedySorting+2
71MediumLongest Substring with At Most Two Distinct Characters
Hash TableStringSliding Window
74ArrayHash TableStringDynamic Programming+2
76ArrayHash TableStringSorting+1