LeetCode The Hard Way

Salesforce

196 problems

ProblemDifficultyFrequency Topics
1326. Minimum Number of Taps to Open to Water a GardenHard40.9%
ArrayDynamic ProgrammingGreedy
Number of Digit OneHard40.9%
MathDynamic ProgrammingRecursion
134. Gas StationMedium40.9%
ArrayGreedy
300. Longest Increasing SubsequenceMedium40.9%
ArrayBinary SearchDynamic ProgrammingLongest Increasing Subsequence
Sliding Window MaximumHard40.9%
ArrayQueueSliding WindowHeap (Priority Queue)Monotonic QueueRange Minimum/Maximum Query
875. Koko Eating BananasMedium40.9%
ArrayBinary Search
2451. Odd String DifferenceEasy40.9%
ArrayHash TableString
992. Subarrays with K Different IntegersHard40.9%
ArrayHash TableSliding WindowCounting
1209. Remove All Adjacent Duplicates in String IIMedium40.9%
StringStack
743. Network Delay TimeMedium40.9%
Depth-First SearchBreadth-First SearchGraph TheoryHeap (Priority Queue)Shortest PathDijkstra's Algorithm
268. Missing NumberEasy40.9%
ArrayHash TableMathBinary SearchBit ManipulationSorting
1219. Path with Maximum GoldMedium40.9%
ArrayBacktrackingMatrix
355. Design TwitterMedium40.9%
Hash TableLinked ListDesignHeap (Priority Queue)
678. Valid Parenthesis StringMedium40.9%
StringDynamic ProgrammingStackGreedyBracket Sequences
2062. Count Vowel Substrings of a StringEasy40.9%
Hash TableString
2603. Collect Coins in a TreeHard40.9%
ArrayTreeGraph TheoryTopological Sort
22. Generate ParenthesesMedium40.9%
StringDynamic ProgrammingBacktrackingBracket Sequences
Strange PrinterHard40.9%
StringDynamic Programming
2366. Minimum Replacements to Sort the ArrayHard40.9%
ArrayMathGreedy
20. Valid ParenthesesEasy35.3%
StringStackBracket Sequences
First Missing PositiveHard35.3%
ArrayHash Table
98. Validate Binary Search TreeMedium35.3%
TreeDepth-First SearchBinary Search TreeBinary Tree
Maximal SquareMedium35.3%
ArrayDynamic ProgrammingMatrix
238. Product of Array Except SelfMedium35.3%
ArrayPrefix Sum
322. Coin ChangeMedium35.3%
ArrayDynamic ProgrammingBreadth-First SearchKnapsack ProblemComplete Knapsack
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