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12 questions tracked12 with solutions
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Frequency scoreSorted highest β†’ lowest frequencyβœ“ Our Solution = we have a detailed walkthrough

Showing 12 of 12 questions

1
100
ArrayHash Table
2
EasyValid Parenthesesβœ“ Our Solution
94
StringStack
3
EasyValid Anagramβœ“ Our Solution
87
Hash TableStringSorting
4
EasyBest Time to Buy and Sell Stockβœ“ Our Solution
87
ArrayDynamic Programming
5
MediumSubsetsβœ“ Our Solution
76
ArrayBacktrackingBit Manipulation
6
EasyFizz Buzzβœ“ Our Solution
76
MathStringSimulation
7
MediumContainer With Most Waterβœ“ Our Solution
76
ArrayTwo PointersGreedy
8
MediumRotate Imageβœ“ Our Solution
76
ArrayMathMatrix
9
MediumLongest Palindromic Substringβœ“ Our Solution
76
Two PointersStringDynamic Programming
10
76
ArrayGreedy
11
MediumGas Stationβœ“ Our Solution
76
ArrayGreedy
12
MediumCoin Changeβœ“ Our Solution
76
ArrayDynamic ProgrammingBreadth-First Search