LeetCode The Hard Way

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2324 problems

ProblemDifficultyFrequency Topics
1036. Escape a Large MazeHard5%
ArrayHash TableDepth-First SearchBreadth-First SearchBidirectional Search
1465. Maximum Area of a Piece of Cake After Horizontal and Vertical CutsMedium5%
ArrayGreedySorting
2320. Count Number of Ways to Place HousesMedium5%
Dynamic Programming
1018. Binary Prefix Divisible By 5Easy5%
ArrayBit Manipulation
Strong FriendshipMedium5%
Database
2496. Maximum Value of a String in an ArrayEasy5%
ArrayString
3075. Maximize Happiness of Selected ChildrenMedium5%
ArrayGreedySorting
751. IP to CIDRMedium5%
StringBit Manipulation
3438. Find Valid Pair of Adjacent Digits in StringEasy5%
Hash TableStringCounting
Memoize IIHard5%
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3545. Minimum Deletions for At Most K Distinct CharactersEasy5%
Hash TableStringGreedySortingCounting
1329. Sort the Matrix DiagonallyMedium5%
ArraySortingMatrix
2791. Count Paths That Can Form a Palindrome in a TreeHard5%
Hash TableBit ManipulationTreeDepth-First Search
3803. Count Residue PrefixesEasy5%
Hash TableString
1172. Dinner Plate StacksHard5%
Hash TableStackDesignHeap (Priority Queue)
1162. As Far from Land as PossibleMedium5%
ArrayDynamic ProgrammingBreadth-First SearchMatrix
3510. Minimum Pair Removal to Sort Array IIHard5%
ArrayHash TableLinked ListHeap (Priority Queue)SimulationDoubly-Linked ListOrdered Set
2789. Largest Element in an Array after Merge OperationsMedium5%
ArrayGreedy
1641. Count Sorted Vowel StringsMedium5%
MathDynamic ProgrammingCombinatorics
2977. Minimum Cost to Convert String IIHard5%
ArrayStringDynamic ProgrammingGraph TheoryTrieShortest Path
3599. Partition Array to Minimize XORMedium5%
ArrayDynamic ProgrammingBit ManipulationPrefix Sum
3824. Minimum K to Reduce Array Within LimitMedium5%
ArrayBinary Search
3379. Transformed ArrayEasy5%
ArraySimulation
3719. Longest Balanced Subarray IMedium5%
ArrayHash TableDivide and ConquerSegment TreePrefix Sum
3713. Longest Balanced Substring IMedium5%
Hash TableStringCountingEnumeration
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