2.02 String

String #

No.TitleSolutionDifficultyTimeComplexitySpaceComplexityFavoriteAcceptance
0003Longest Substring Without Repeating CharactersGoMediumO(n)O(1)❤️31.9%
0005Longest Palindromic SubstringGoMedium31.0%
0006ZigZag ConversionGoMedium39.0%
0008String to Integer (atoi)GoMedium15.9%
0012Integer to RomanGoMedium57.7%
0013Roman to IntegerGoEasy57.4%
0017Letter Combinations of a Phone NumberGoMediumO(log n)O(1)50.8%
0020Valid ParenthesesGoEasyO(log n)O(1)40.2%
0022Generate ParenthesesGoMediumO(log n)O(1)67.0%
0028Implement strStr()GoEasyO(n)O(1)35.7%
0030Substring with Concatenation of All WordsGoHardO(n)O(n)❤️26.8%
0032Longest Valid ParenthesesGoHard30.2%
0043Multiply StringsGoMedium35.6%
0049Group AnagramsGoMediumO(n log n)O(n)60.7%
0065Valid NumberGoHard16.8%
0067Add BinaryGoEasy48.0%
0071Simplify PathGoMediumO(n)O(n)35.5%
0076Minimum Window SubstringGoHardO(n)O(n)❤️36.8%
0091Decode WaysGoMediumO(n)O(n)27.6%
0093Restore IP AddressesGoMediumO(n)O(n)❤️38.7%
0097Interleaving StringGoMedium33.7%
0115Distinct SubsequencesGoHard40.5%
0125Valid PalindromeGoEasyO(n)O(1)39.2%
0126Word Ladder IIGoHardO(n)O(n^2)❤️24.4%
0127Word LadderGoHard32.9%
0131Palindrome PartitioningGoMedium54.0%
0151Reverse Words in a StringGoMedium25.0%
0168Excel Sheet Column TitleGoEasy32.4%
0171Excel Sheet Column NumberGoEasy57.7%
0179Largest NumberGoMedium31.3%
0187Repeated DNA SequencesGoMedium42.2%
0205Isomorphic StringsGoEasy40.9%
0208Implement Trie (Prefix Tree)GoMedium53.7%
0211Design Add and Search Words Data StructureGoMedium41.5%
0212Word Search IIGoHard37.8%
0224Basic CalculatorGoHard38.7%
0227Basic Calculator IIGoMedium39.2%
0242Valid AnagramGoEasy59.4%
0257Binary Tree PathsGoEasy55.2%
0290Word PatternGoEasy38.7%
0297Serialize and Deserialize Binary TreeGoHard51.1%
0306Additive NumberGoMedium29.9%
0318Maximum Product of Word LengthsGoMedium55.4%
0331Verify Preorder Serialization of a Binary TreeGoMedium41.4%
0344Reverse StringGoEasyO(n)O(1)71.4%
0345Reverse Vowels of a StringGoEasyO(n)O(1)45.7%
0385Mini ParserGoMedium34.9%
0387First Unique Character in a StringGoEasy54.6%
0389Find the DifferenceGoEasy58.3%
0392Is SubsequenceGoEasy49.8%
0394Decode StringGoMedium53.7%
0395Longest Substring with At Least K Repeating CharactersGoMedium43.9%
0402Remove K DigitsGoMedium28.8%
0409Longest PalindromeGoEasy52.5%
0412Fizz BuzzGoEasy64.5%
0423Reconstruct Original Digits from EnglishGoMedium51.2%
0424Longest Repeating Character ReplacementGoMedium49.0%
0433Minimum Genetic MutationGoMedium44.1%
0438Find All Anagrams in a StringGoMedium45.8%
0451Sort Characters By FrequencyGoMedium65.2%
0474Ones and ZeroesGoMedium43.5%
0500Keyboard RowGoEasy66.4%
0524Longest Word in Dictionary through DeletingGoMedium50.3%
0535Encode and Decode TinyURLGoMedium82.7%
0537Complex Number MultiplicationGoMedium68.6%
0541Reverse String IIGoEasy49.8%
0557Reverse Words in a String IIIGoEasy73.2%
0567Permutation in StringGoMedium44.6%
0583Delete Operation for Two StringsGoMedium52.3%
0599Minimum Index Sum of Two ListsGoEasy52.4%
0609Find Duplicate File in SystemGoMedium63.1%
0647Palindromic SubstringsGoMedium63.1%
0648Replace WordsGoMedium59.9%
0676Implement Magic DictionaryGoMedium55.7%
0692Top K Frequent WordsGoMedium53.5%
0696Count Binary SubstringsGoEasy61.6%
0709To Lower CaseGoEasy80.7%
0720Longest Word in DictionaryGoMedium49.7%
0721Accounts MergeGoMedium53.2%
0726Number of AtomsGoHard51.2%
0745Prefix and Suffix SearchGoHard35.2%
0748Shortest Completing WordGoEasy58.0%
0752Open the LockGoMedium54.7%
0763Partition LabelsGoMedium78.3%
0767Reorganize StringGoMediumO(n log n)O(log n)❤️50.7%
0771Jewels and StonesGoEasy87.2%
0784Letter Case PermutationGoMedium69.3%
0792Number of Matching SubsequencesGoMedium48.9%
0811Subdomain Visit CountGoEasy72.3%
0816Ambiguous CoordinatesGoMedium55.7%
0819Most Common WordGoEasy45.4%
0820Short Encoding of WordsGoMedium55.0%
0821Shortest Distance to a CharacterGoEasy70.3%
0828Count Unique Characters of All Substrings of a Given StringGoHard46.8%
0830Positions of Large GroupsGoEasy50.7%
0838Push DominoesGoMedium50.6%
0839Similar String GroupsGoHard42.7%
0842Split Array into Fibonacci SequenceGoMediumO(n^2)O(1)❤️37.2%
0844Backspace String CompareGoEasy47.2%
0856Score of ParenthesesGoMediumO(n)O(n)65.1%
0880Decoded String at IndexGoMedium28.2%
0884Uncommon Words from Two SentencesGoEasy64.5%
0890Find and Replace PatternGoMedium75.5%
0916Word SubsetsGoMedium52.7%
0921Minimum Add to Make Parentheses ValidGoMedium75.5%
0925Long Pressed NameGoEasyO(n)O(1)36.2%
0942DI String MatchGoEasy74.3%
0949Largest Time for Given DigitsGoMedium36.0%
0953Verifying an Alien DictionaryGoEasy52.2%
0966Vowel SpellcheckerGoMedium51.8%
0981Time Based Key-Value StoreGoMedium54.3%
0984String Without AAA or BBBGoMedium39.2%
0990Satisfiability of Equality EquationsGoMedium47.7%
1002Find Common CharactersGoEasy68.7%
1003Check If Word Is Valid After SubstitutionsGoMediumO(n)O(1)57.1%
1021Remove Outermost ParenthesesGoEasy79.4%
1028Recover a Tree From Preorder TraversalGoHard71.3%
1047Remove All Adjacent Duplicates In StringGoEasy71.6%
1048Longest String ChainGoMedium56.3%
1078Occurrences After BigramGoEasy64.7%
1079Letter Tile PossibilitiesGoMedium76.2%
1108Defanging an IP AddressGoEasy88.5%
1111Maximum Nesting Depth of Two Valid Parentheses StringsGoMedium72.7%
1143Longest Common SubsequenceGoMedium58.8%
1154Day of the YearGoEasy49.8%
1160Find Words That Can Be Formed by CharactersGoEasy67.8%
1170Compare Strings by Frequency of the Smallest CharacterGoMedium60.6%
1178Number of Valid Words for Each PuzzleGoHard40.6%
1189Maximum Number of BalloonsGoEasy62.0%
1190Reverse Substrings Between Each Pair of ParenthesesGoMedium64.8%
1202Smallest String With SwapsGoMedium49.6%
1208Get Equal Substrings Within BudgetGoMedium44.9%
1209Remove All Adjacent Duplicates in String IIGoMedium56.9%
1221Split a String in Balanced StringsGoEasy84.5%
1234Replace the Substring for Balanced StringGoMedium34.8%
1239Maximum Length of a Concatenated String with Unique CharactersGoMedium50.5%
1249Minimum Remove to Make Valid ParenthesesGoMedium64.5%
1268Search Suggestions SystemGoMedium65.5%
1332Remove Palindromic SubsequencesGoEasy68.7%
1396Design Underground SystemGoMedium71.8%
1455Check If a Word Occurs As a Prefix of Any Word in a SentenceGoEasy64.7%
1461Check If a String Contains All Binary Codes of Size KGoMedium54.3%
1573Number of Ways to Split a StringGoMedium31.3%
1614Maximum Nesting Depth of the ParenthesesGoEasy82.6%
1624Largest Substring Between Two Equal CharactersGoEasy58.6%
1629Slowest KeyGoEasy59.0%
1647Minimum Deletions to Make Character Frequencies UniqueGoMedium55.9%
1653Minimum Deletions to Make String BalancedGoMedium52.5%
1657Determine if Two Strings Are CloseGoMedium54.9%
1662Check If Two String Arrays are EquivalentGoEasy82.0%
1663Smallest String With A Given Numeric ValueGoMedium64.2%
1668Maximum Repeating SubstringGoEasy38.7%
1678Goal Parser InterpretationGoEasy84.9%
1684Count the Number of Consistent StringsGoEasy81.6%
1689Partitioning Into Minimum Number Of Deci-Binary NumbersGoMedium88.2%
1694Reformat Phone NumberGoEasy64.7%
1704Determine if String Halves Are AlikeGoEasy78.6%
1736Latest Time by Replacing Hidden DigitsGoEasy41.4%
1758Minimum Changes To Make Alternating Binary StringGoEasy58.4%
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