LeetCode Questions Summary Table

LeetCode Online Judge Questions

QuestionsData Structure&AlgorithmsLanguageLength of Last WordStringsJava, c++Substring with Concatenation of All WordsMap, substring()Java, c++Minimum Window SubstringGreedy, Map Java, c++Longest Substring Without Repeating CharactersGreedy, MapJava, c++Longest Palindromic Substringstring, DPJava, c++Longest Common PrefixStringsJava, c++Interleaving StringDPJava, c++Implement strStr()string, indexof(), kmpJava, c++String to Integer (atoi)StringsJava, c++Multiply Stringsstring, multipleJava, c++Reverse Words in a Stringstring, split()Java, c++Path SumRecursionJava, c++Path Sum IIstack, RecursionJava, c++Same Treetree, RecursionJava, c++Unique Binary Search TreesDP, Java, c++Unique Binary Search Trees IIRecursionJava, c++Convert Sorted List to Binary Search TreeRecursionJava, c++Convert Sorted Array to Binary Search TreeRecursionJava, c++Binary Tree Level Order TraversalBFSJava, c++Binary Tree Inorder TraversalRecursion, Iterative(Stack)Java, c++Symmetric TreeRecursionJava, c++Recover Binary Search TreeRecursionJava, c++Validate Binary Search TreeRecursionJava, c++Binary Tree Zigzag Level Order TraversalRecursionJava, c++Maximum Depth of Binary TreeRecursionJava, c++Construct Binary Tree from Preorder and Inorder TraversalRecursionJava, c++Construct Binary Tree from Inorder and Postorder TraversalRecursionJava, c++Balanced Binary TreeRecursionJava, c++Minimum Depth of Binary TreeRecursion, IterativeJava, c++Flatten Binary Tree to Linked List遍历应用Java, c++Binary Tree Maximum Path SumRecursionJava, c++Binary Tree Preorder TraversalRecursion, IterativeJava, c++Binary Tree Postorder TraversalRecursion, IterativeJava, c++Remove Nth Node From End of Listtwo pointersJava, c++Merge k Sorted ListsLinkedList, PriorityQueueJava, c++Rotate ListLinkedListJava, c++Merge Two Sorted Liststwo pointersJava, c++Remove Duplicates from Sorted Listtwo pointersJava, c++Remove Duplicates from Sorted List IItwo pointersJava, c++Partition ListLinkedList, two pointersJava, c++Reverse Linked List IItwo pointersJava, c++Copy List with Random PointerLinkedListJava, c++Linked List Cycletwo pointersJava, c++Linked List Cycle IItwo pointersJava, c++Reorder ListLinkedList, rotate, insertJava, c++Insertion Sort ListLinkedList, insertion sortJava, c++Sort ListLinkedList, merge sortJava, c++Word BreakDPJava, c++CandyarrayJava, c++Palindrome Partitioning IIDPJava, c++Longest Consecutive SequencehashmapJava, c++Climbing Stairsmath, DPJava, c++Best Time to Buy and Sell StockGreedyJava, c++Best Time to Buy and Sell Stock IIGreedyJava, c++Best Time to Buy and Sell Stock IIIGreedyJava, c++Unique PathsDPJava, c++Unique Paths IIDPJava, c++TriangleDPJava, c++Minimum Path SumDPJava, c++Maximum SubarrayDPJava, c++Jump GameGreedyJava, c++Jump Game IIGreedyJava, c++Edit distanceDPJava, c++Distinct SubsequencesDPJava, c++Two Sumarray, HashJava, c++3Sumarray, two pointersJava, c++3Sum Closestarray, two pointersJava, c++4Sumtwo pointersJava, c++Median of Two Sorted Arrays二分法,递归Java, c++Add Two NumbersmathJava, c++ZigZag Conversionstring, mathJava, c++Set Matrix Zeroesarray, matrixJava, c++Rotate Imagearray, matrixJava, c++Spiral Matrixarray, matrixJava, c++Spiral Matrix2array, matrixJava, c++Search a 2D matrixmatrixJava, c++Palindrome Numbermath, RecursionJava, c++Regular Expression Matchingstring, recursionc++Container With Most Watertwo-pointerJava, c++Trapping Rain Water细节实现Java, c++Integer to RomanMathJava, c++Roman to IntegerMathJava, c++Letter Combinations a Phone Number回溯Java, c++Valid ParenthesesStackJava, c++Generate ParenthesesRecursionJava, c++Swap Nodes in PairsRecursionJava, c++Reverse Nodes in k-GrouplinklistJava, c++Remove Duplicates from Sorted Arraytwo pointersJava, c++Remove Elementarray, two pointersJava, c++Divide Two Integersmath, bit operationJava, c++Next PermutationmathJava, c++PermutationsRecursionJava, c++Permutations II RecursionJava, c++Permutations Sequencemath/ DFSJava, c++Longest Valid ParenthesesstackJava, c++Search in Rotated Sorted ArrayBinary SearchJava, c++Search for a RangeBinary SearchJava, c++Search Insert PositinBinary SearchJava, c++Valid Sudokuarray, mathJava, c++Sudoku Solvermath, 回溯Java, c++Count and Saystring operationJava, c++Combination Sum回溯Java, c++Combinations Sum II回溯Java, c++First Missing Positivearray, bucket sortJava, c++Anagramsstring, hashmapJava, c++Pow(x,n)二分法，递归Java, c++N-Queens回溯Java, c++N-Queens II回溯Java, c++Merge Intervalsmath, comparatorJava, c++Insert Intervalmath, comparatorJava, c++Add BinarymathJava, c++Valid NumberMath, reg expressionJavaPlus OnemathJava, c++Text Justificationstring, 细节Java, c++Sqrt(x)binary searchJava, c++Sort Colorstwo pointerJava, c++CombinationsDFSJava, c++SubsetsDFSJava, c++Subsets IIDFSJava, c++Word Searcharray, 标记数组Java, c++Remove Duplicates from Sorted Array IItwo pointersJava, c++Search in Rotated Sorted Array IIBinary SearchJava, c++Largest Rectangle in HistogramstackJava, c++Maximal RectanglestackJava, c++Merge Sorted Arrayarray, merge sortJava, c++Gray CodemathJava, c++Decode WaysDPJava, c++Restore IP AddressRecursionJava, c++Binary Tree Level Order Traversal IIBFSJava, c++Populating Next Right Pointers in Each NodeBTJava, c++Populating Next Right Pointers in Each Node IIBTJava, c++Pascal's TrianglemathJava, c++Pascal's Triangle IImath, 滚动数组Java, c++Valid Palindromestring, two pointersJava, c++Word LadderdictJava, c++Sum Root to Leaf NumbersRecursionJava, c++Surrounded RegionBFSJava, c++Clone GraphRecursionJava, c++Gas StationarrayJava, c++Single NumberXORJava, c++Single Number IIbit manipulationJava, c++Word Break IIDFSJava, c++LRU CacheDesign ClassJava, c++Max Points on a linemathJava, c++Evaluate Reverse Polish NotationstackJava, c++Palindrome PartitioningDFSJava, c++Scramble StringRecursionJava, c++Simplify PathstackJava, c++Permutation SequencemathJava, c++Wildcard Matchingstring, greedyJava, c++Word Ladder IIBFS, MapJava, c++Reverse IntegermathJava, c++Maximum Product SubarraygreedyJava, c++