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18 questions tracked17 with solutions
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Frequency scoreSorted highest β†’ lowest frequencyβœ“ Our Solution = we have a detailed walkthrough

Showing 18 of 18 questions

1
HardConstruct Target Array With Multiple Sumsβœ“ Our Solution
100
ArrayHeap (Priority Queue)
2
MediumEncode Number
87
MathStringBit Manipulation
3
EasyFind Numbers with Even Number of Digitsβœ“ Our Solution
87
ArrayMath
4
MediumFinding Pairs With a Certain Sumβœ“ Our Solution
87
ArrayHash TableDesign
5
MediumGet Biggest Three Rhombus Sums in a Gridβœ“ Our Solution
87
ArrayMathSortingHeap (Priority Queue)+2
6
EasySubstrings of Size Three with Distinct Charactersβœ“ Our Solution
87
Hash TableStringSliding WindowCounting
7
Medium3Sum With Multiplicityβœ“ Our Solution
87
ArrayHash TableTwo PointersSorting+1
8
Easy1-bit and 2-bit Charactersβœ“ Our Solution
87
Array
9
EasyFind the K-Beauty of a Numberβœ“ Our Solution
87
MathStringSliding Window
10
EasySubtract the Product and Sum of Digits of an Integerβœ“ Our Solution
87
Math
11
MediumExam Roomβœ“ Our Solution
87
DesignHeap (Priority Queue)Ordered Set
12
MediumRange Frequency Queriesβœ“ Our Solution
87
ArrayHash TableBinary SearchDesign+1
13
EasyMaximum Number of Words You Can Typeβœ“ Our Solution
87
Hash TableString
14
MediumSort the Matrix Diagonallyβœ“ Our Solution
87
ArraySortingMatrix
15
MediumNumber of Subarrays with Bounded Maximumβœ“ Our Solution
52
ArrayTwo Pointers
16
MediumSubarray Sum Equals Kβœ“ Our Solution
52
ArrayHash TablePrefix Sum
17
HardBinary Tree Camerasβœ“ Our Solution
52
Dynamic ProgrammingTreeDepth-First SearchBinary Tree
18
MediumInsert Delete GetRandom O(1)βœ“ Our Solution
52
ArrayHash TableMathDesign+1