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30 questions tracked29 with solutions
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Frequency scoreSorted highest β†’ lowest frequencyβœ“ Our Solution = we have a detailed walkthrough

Showing 30 of 30 questions

1
EasyRemove All Adjacent Duplicates In Stringβœ“ Our Solution
100
StringStack
2
MediumMinimize Maximum of Arrayβœ“ Our Solution
98
ArrayBinary SearchDynamic ProgrammingGreedy+1
3
EasyNumber of Unequal Triplets in Arrayβœ“ Our Solution
98
ArrayHash TableSorting
4
EasyFind Indices With Index and Value Difference Iβœ“ Our Solution
98
ArrayTwo Pointers
5
MediumFind Indices With Index and Value Difference IIβœ“ Our Solution
98
ArrayTwo Pointers
6
MediumLongest Nice Subarrayβœ“ Our Solution
98
ArrayBit ManipulationSliding Window
7
MediumMin Stackβœ“ Our Solution
95
StackDesign
8
MediumNumber of Divisible Substrings
80
Hash TableStringCountingPrefix Sum
9
MediumLinked List Cycle IIβœ“ Our Solution
80
Hash TableLinked ListTwo Pointers
10
EasyValid Parenthesesβœ“ Our Solution
75
StringStack
11
MediumContainer With Most Waterβœ“ Our Solution
75
ArrayTwo PointersGreedy
12
67
ArrayHash Table
13
MediumReverse Words in a Stringβœ“ Our Solution
67
Two PointersString
14
MediumLongest Palindromic Substringβœ“ Our Solution
67
Two PointersStringDynamic Programming
15
MediumNext Permutationβœ“ Our Solution
67
ArrayTwo Pointers
16
MediumLongest Substring Without Repeating Charactersβœ“ Our Solution
67
Hash TableStringSliding Window
17
67
ArrayTwo PointersSorting
18
MediumWord Searchβœ“ Our Solution
57
ArrayStringBacktrackingDepth-First Search+1
19
MediumLargest Numberβœ“ Our Solution
57
ArrayStringGreedySorting
20
EasyReverse Linked Listβœ“ Our Solution
57
Linked ListRecursion
21
HardTrapping Rain Waterβœ“ Our Solution
57
ArrayTwo PointersDynamic ProgrammingStack+1
22
MediumExecute Asynchronous Functions in Parallelβœ“ Our Solution
57
23
MediumLongest Consecutive Sequenceβœ“ Our Solution
57
ArrayHash TableUnion Find
24
MediumSecond Highest Salaryβœ“ Our Solution
57
Database
25
MediumProduct of Array Except Selfβœ“ Our Solution
57
ArrayPrefix Sum
26
MediumBest Time to Buy and Sell Stock IIβœ“ Our Solution
57
ArrayDynamic ProgrammingGreedy
27
MediumString Compressionβœ“ Our Solution
57
Two PointersString
28
MediumSum of Subarray Minimumsβœ“ Our Solution
57
ArrayDynamic ProgrammingStackMonotonic Stack
29
MediumSearch in Rotated Sorted Arrayβœ“ Our Solution
57
ArrayBinary Search
30
MediumFind Minimum in Rotated Sorted Arrayβœ“ Our Solution
57
ArrayBinary Search