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All String problems

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⊣ 3 Longest Substring Without Repeating Characters
⊣ 5 Longest Palindromic Substring
⊣ 6 Zigzag Conversion
⊣ 8 String to Integer (atoi)
⊣ 10 Regular Expression Matching
⊣ 12 Integer to Roman
⊣ 13 Roman to Integer
⊣ 14 Longest Common Prefix
⊣ 17 Letter Combinations of a Phone Number
⊣ 20 Valid Parentheses
⊣ 22 Generate Parentheses
⊣ 28 Find the Index of the First Occurrence in a String
⊣ 30 Substring with Concatenation of All Words
⊣ 32 Longest Valid Parentheses
⊣ 38 Count and Say
⊣ 43 Multiply Strings
⊣ 44 Wildcard Matching
⊣ 49 Group Anagrams
⊣ 58 Length of Last Word
⊣ 65 Valid Number
⊣ 67 Add Binary
⊣ 68 Text Justification
⊣ 71 Simplify Path
⊣ 72 Edit Distance
⊣ 76 Minimum Window Substring
⊣ 79 Word Search
⊣ 87 Scramble String
⊣ 91 Decode Ways
⊣ 93 Restore IP Addresses
⊣ 97 Interleaving String
⊣ 115 Distinct Subsequences
⊣ 125 Valid Palindrome
⊣ 126 Word Ladder II
⊣ 127 Word Ladder
⊣ 131 Palindrome Partitioning
⊣ 132 Palindrome Partitioning II
⊣ 139 Word Break
⊣ 140 Word Break II
⊣ 151 Reverse Words in a String
⊣ 165 Compare Version Numbers
⊣ 166 Fraction to Recurring Decimal
⊣ 168 Excel Sheet Column Title
⊣ 171 Excel Sheet Column Number
⊣ 179 Largest Number
⊣ 187 Repeated DNA Sequences
⊣ 205 Isomorphic Strings
⊣ 208 Implement Trie (Prefix Tree)
⊣ 211 Design Add and Search Words Data Structure
⊣ 212 Word Search II
⊣ 214 Shortest Palindrome
⊣ 224 Basic Calculator
⊣ 227 Basic Calculator II
⊣ 241 Different Ways to Add Parentheses
⊣ 242 Valid Anagram
⊣ 257 Binary Tree Paths
⊣ 273 Integer to English Words
⊣ 282 Expression Add Operators
⊣ 290 Word Pattern
⊣ 297 Serialize and Deserialize Binary Tree
⊣ 299 Bulls and Cows
⊣ 301 Remove Invalid Parentheses
⊣ 306 Additive Number
⊣ 316 Remove Duplicate Letters
⊣ 318 Maximum Product of Word Lengths
⊣ 331 Verify Preorder Serialization of a Binary Tree
⊣ 332 Reconstruct Itinerary
⊣ 336 Palindrome Pairs
⊣ 344 Reverse String
⊣ 345 Reverse Vowels of a String
⊣ 383 Ransom Note
⊣ 385 Mini Parser
⊣ 387 First Unique Character in a String
⊣ 388 Longest Absolute File Path
⊣ 389 Find the Difference
⊣ 392 Is Subsequence
⊣ 394 Decode String
⊣ 395 Longest Substring with At Least K Repeating Characters
⊣ 399 Evaluate Division
⊣ 402 Remove K Digits
⊣ 405 Convert a Number to Hexadecimal
⊣ 409 Longest Palindrome
⊣ 412 Fizz Buzz
⊣ 415 Add Strings
⊣ 420 Strong Password Checker
⊣ 423 Reconstruct Original Digits from English
⊣ 424 Longest Repeating Character Replacement
⊣ 433 Minimum Genetic Mutation
⊣ 434 Number of Segments in a String
⊣ 438 Find All Anagrams in a String
⊣ 443 String Compression
⊣ 449 Serialize and Deserialize BST
⊣ 451 Sort Characters By Frequency
⊣ 459 Repeated Substring Pattern
⊣ 466 Count The Repetitions
⊣ 467 Unique Substrings in Wraparound String
⊣ 468 Validate IP Address
⊣ 472 Concatenated Words
⊣ 474 Ones and Zeroes
⊣ 481 Magical String
⊣ 482 License Key Formatting
⊣ 488 Zuma Game
⊣ 500 Keyboard Row
⊣ 504 Base 7
⊣ 514 Freedom Trail
⊣ 516 Longest Palindromic Subsequence
⊣ 520 Detect Capital
⊣ 521 Longest Uncommon Subsequence I
⊣ 522 Longest Uncommon Subsequence II
⊣ 524 Longest Word in Dictionary through Deleting
⊣ 535 Encode and Decode TinyURL
⊣ 537 Complex Number Multiplication
⊣ 539 Minimum Time Difference
⊣ 541 Reverse String II
⊣ 551 Student Attendance Record I
⊣ 556 Next Greater Element III
⊣ 557 Reverse Words in a String III
⊣ 564 Find the Closest Palindrome
⊣ 567 Permutation in String
⊣ 583 Delete Operation for Two Strings
⊣ 591 Tag Validator
⊣ 592 Fraction Addition and Subtraction
⊣ 599 Minimum Index Sum of Two Lists
⊣ 606 Construct String from Binary Tree
⊣ 609 Find Duplicate File in System
⊣ 639 Decode Ways II
⊣ 640 Solve the Equation
⊣ 647 Palindromic Substrings
⊣ 648 Replace Words
⊣ 649 Dota2 Senate
⊣ 657 Robot Return to Origin
⊣ 664 Strange Printer
⊣ 676 Implement Magic Dictionary
⊣ 677 Map Sum Pairs
⊣ 678 Valid Parenthesis String
⊣ 680 Valid Palindrome II
⊣ 686 Repeated String Match
⊣ 691 Stickers to Spell Word
⊣ 692 Top K Frequent Words
⊣ 696 Count Binary Substrings
⊣ 709 To Lower Case
⊣ 712 Minimum ASCII Delete Sum for Two Strings
⊣ 720 Longest Word in Dictionary
⊣ 721 Accounts Merge
⊣ 722 Remove Comments
⊣ 726 Number of Atoms
⊣ 730 Count Different Palindromic Subsequences
⊣ 736 Parse Lisp Expression
⊣ 745 Prefix and Suffix Search
⊣ 748 Shortest Completing Word
⊣ 752 Open the Lock
⊣ 753 Cracking the Safe
⊣ 756 Pyramid Transition Matrix
⊣ 761 Special Binary String
⊣ 763 Partition Labels
⊣ 767 Reorganize String
⊣ 770 Basic Calculator IV
⊣ 771 Jewels and Stones
⊣ 777 Swap Adjacent in LR String
⊣ 784 Letter Case Permutation
⊣ 791 Custom Sort String
⊣ 792 Number of Matching Subsequences
⊣ 796 Rotate String
⊣ 804 Unique Morse Code Words
⊣ 806 Number of Lines To Write String
⊣ 809 Expressive Words
⊣ 811 Subdomain Visit Count
⊣ 816 Ambiguous Coordinates
⊣ 819 Most Common Word
⊣ 820 Short Encoding of Words
⊣ 821 Shortest Distance to a Character
⊣ 824 Goat Latin
⊣ 828 Count Unique Characters of All Substrings of a Given String
⊣ 830 Positions of Large Groups
⊣ 831 Masking Personal Information
⊣ 833 Find And Replace in String
⊣ 838 Push Dominoes
⊣ 839 Similar String Groups
⊣ 842 Split Array into Fibonacci Sequence
⊣ 843 Guess the Word
⊣ 844 Backspace String Compare
⊣ 848 Shifting Letters
⊣ 854 K-Similar Strings
⊣ 856 Score of Parentheses
⊣ 859 Buddy Strings
⊣ 880 Decoded String at Index
⊣ 884 Uncommon Words from Two Sentences
⊣ 890 Find and Replace Pattern
⊣ 893 Groups of Special-Equivalent Strings
⊣ 899 Orderly Queue
⊣ 902 Numbers At Most N Given Digit Set
⊣ 903 Valid Permutations for DI Sequence
⊣ 906 Super Palindromes
⊣ 916 Word Subsets
⊣ 917 Reverse Only Letters
⊣ 921 Minimum Add to Make Parentheses Valid
⊣ 925 Long Pressed Name
⊣ 926 Flip String to Monotone Increasing
⊣ 929 Unique Email Addresses
⊣ 936 Stamping The Sequence
⊣ 937 Reorder Data in Log Files
⊣ 940 Distinct Subsequences II
⊣ 942 DI String Match
⊣ 943 Find the Shortest Superstring
⊣ 944 Delete Columns to Make Sorted
⊣ 949 Largest Time for Given Digits
⊣ 953 Verifying an Alien Dictionary
⊣ 955 Delete Columns to Make Sorted II
⊣ 960 Delete Columns to Make Sorted III
⊣ 966 Vowel Spellchecker
⊣ 972 Equal Rational Numbers
⊣ 981 Time Based Key-Value Store
⊣ 984 String Without AAA or BBB
⊣ 988 Smallest String Starting From Leaf
⊣ 990 Satisfiability of Equality Equations
⊣ 1002 Find Common Characters
⊣ 1003 Check If Word Is Valid After Substitutions
⊣ 1016 Binary String With Substrings Representing 1 To N
⊣ 1021 Remove Outermost Parentheses
⊣ 1023 Camelcase Matching
⊣ 1028 Recover a Tree From Preorder Traversal
⊣ 1032 Stream of Characters
⊣ 1041 Robot Bounded In Circle
⊣ 1044 Longest Duplicate Substring
⊣ 1047 Remove All Adjacent Duplicates In String
⊣ 1048 Longest String Chain
⊣ 1061 Lexicographically Smallest Equivalent String (PRO)
⊣ 1071 Greatest Common Divisor of Strings
⊣ 1078 Occurrences After Bigram
⊣ 1079 Letter Tile Possibilities
⊣ 1081 Smallest Subsequence of Distinct Characters
⊣ 1092 Shortest Common Supersequence
⊣ 1096 Brace Expansion II
⊣ 1106 Parsing A Boolean Expression
⊣ 1108 Defanging an IP Address
⊣ 1111 Maximum Nesting Depth of Two Valid Parentheses Strings
⊣ 1138 Alphabet Board Path
⊣ 1143 Longest Common Subsequence
⊣ 1147 Longest Chunked Palindrome Decomposition
⊣ 1154 Day of the Year
⊣ 1156 Swap For Longest Repeated Character Substring
⊣ 1160 Find Words That Can Be Formed by Characters
⊣ 1163 Last Substring in Lexicographical Order
⊣ 1169 Invalid Transactions
⊣ 1170 Compare Strings by Frequency of the Smallest Character
⊣ 1177 Can Make Palindrome from Substring
⊣ 1178 Number of Valid Words for Each Puzzle
⊣ 1189 Maximum Number of Balloons
⊣ 1190 Reverse Substrings Between Each Pair of Parentheses
⊣ 1202 Smallest String With Swaps
⊣ 1208 Get Equal Substrings Within Budget
⊣ 1209 Remove All Adjacent Duplicates in String II
⊣ 1221 Split a String in Balanced Strings
⊣ 1233 Remove Sub-Folders from the Filesystem
⊣ 1234 Replace the Substring for Balanced String
⊣ 1239 Maximum Length of a Concatenated String with Unique Characters
⊣ 1247 Minimum Swaps to Make Strings Equal
⊣ 1249 Minimum Remove to Make Valid Parentheses
⊣ 1255 Maximum Score Words Formed by Letters
⊣ 1268 Search Suggestions System
⊣ 1278 Palindrome Partitioning III
⊣ 1286 Iterator for Combination
⊣ 1297 Maximum Number of Occurrences of a Substring
⊣ 1307 Verbal Arithmetic Puzzle
⊣ 1309 Decrypt String from Alphabet to Integer Mapping
⊣ 1312 Minimum Insertion Steps to Make a String Palindrome
⊣ 1316 Distinct Echo Substrings
⊣ 1320 Minimum Distance to Type a Word Using Two Fingers
⊣ 1324 Print Words Vertically
⊣ 1328 Break a Palindrome
⊣ 1332 Remove Palindromic Subsequences
⊣ 1347 Minimum Number of Steps to Make Two Strings Anagram
⊣ 1348 Tweet Counts Per Frequency
⊣ 1358 Number of Substrings Containing All Three Characters
⊣ 1360 Number of Days Between Two Dates
⊣ 1366 Rank Teams by Votes
⊣ 1370 Increasing Decreasing String
⊣ 1371 Find the Longest Substring Containing Vowels in Even Counts
⊣ 1374 Generate a String With Characters That Have Odd Counts
⊣ 1392 Longest Happy Prefix
⊣ 1396 Design Underground System
⊣ 1397 Find All Good Strings
⊣ 1400 Construct K Palindrome Strings
⊣ 1404 Number of Steps to Reduce a Number in Binary Representation to One
⊣ 1405 Longest Happy String
⊣ 1408 String Matching in an Array
⊣ 1410 HTML Entity Parser
⊣ 1415 The k-th Lexicographical String of All Happy Strings of Length n
⊣ 1416 Restore The Array
⊣ 1417 Reformat The String
⊣ 1418 Display Table of Food Orders in a Restaurant
⊣ 1419 Minimum Number of Frogs Croaking
⊣ 1422 Maximum Score After Splitting a String
⊣ 1433 Check If a String Can Break Another String
⊣ 1436 Destination City
⊣ 1446 Consecutive Characters
⊣ 1447 Simplified Fractions
⊣ 1451 Rearrange Words in a Sentence
⊣ 1452 People Whose List of Favorite Companies Is Not a Subset of Another List
⊣ 1455 Check If a Word Occurs As a Prefix of Any Word in a Sentence
⊣ 1456 Maximum Number of Vowels in a Substring of Given Length
⊣ 1461 Check If a String Contains All Binary Codes of Size K
⊣ 1487 Making File Names Unique
⊣ 1496 Path Crossing
⊣ 1505 Minimum Possible Integer After at Most K Adjacent Swaps On Digits
⊣ 1507 Reformat Date
⊣ 1513 Number of Substrings With Only 1s
⊣ 1520 Maximum Number of Non-Overlapping Substrings
⊣ 1525 Number of Good Ways to Split a String
⊣ 1528 Shuffle String
⊣ 1529 Minimum Suffix Flips
⊣ 1531 String Compression II
⊣ 1540 Can Convert String in K Moves
⊣ 1541 Minimum Insertions to Balance a Parentheses String
⊣ 1542 Find Longest Awesome Substring
⊣ 1544 Make The String Great
⊣ 1545 Find Kth Bit in Nth Binary String
⊣ 1556 Thousand Separator
⊣ 1573 Number of Ways to Split a String
⊣ 1576 Replace All ?'s to Avoid Consecutive Repeating Characters
⊣ 1578 Minimum Time to Make Rope Colorful
⊣ 1585 Check If String Is Transformable With Substring Sort Operations
⊣ 1592 Rearrange Spaces Between Words
⊣ 1593 Split a String Into the Max Number of Unique Substrings
⊣ 1598 Crawler Log Folder
⊣ 1604 Alert Using Same Key-Card Three or More Times in a One Hour Period
⊣ 1614 Maximum Nesting Depth of the Parentheses
⊣ 1616 Split Two Strings to Make Palindrome
⊣ 1624 Largest Substring Between Two Equal Characters
⊣ 1625 Lexicographically Smallest String After Applying Operations
⊣ 1629 Slowest Key
⊣ 1638 Count Substrings That Differ by One Character (PRO)
⊣ 1639 Number of Ways to Form a Target String Given a Dictionary
⊣ 1647 Minimum Deletions to Make Character Frequencies Unique
⊣ 1653 Minimum Deletions to Make String Balanced
⊣ 1657 Determine if Two Strings Are Close
⊣ 1662 Check If Two String Arrays are Equivalent
⊣ 1663 Smallest String With A Given Numeric Value
⊣ 1668 Maximum Repeating Substring (PRO)
⊣ 1678 Goal Parser Interpretation
⊣ 1684 Count the Number of Consistent Strings (PRO)
⊣ 1689 Partitioning Into Minimum Number Of Deci-Binary Numbers
⊣ 1694 Reformat Phone Number
⊣ 1702 Maximum Binary String After Change
⊣ 1704 Determine if String Halves Are Alike
⊣ 1717 Maximum Score From Removing Substrings
⊣ 1736 Latest Time by Replacing Hidden Digits
⊣ 1737 Change Minimum Characters to Satisfy One of Three Conditions
⊣ 1745 Palindrome Partitioning IV
⊣ 1750 Minimum Length of String After Deleting Similar Ends
⊣ 1754 Largest Merge Of Two Strings
⊣ 1758 Minimum Changes To Make Alternating Binary String
⊣ 1759 Count Number of Homogenous Substrings
⊣ 1763 Longest Nice Substring (PRO)
⊣ 1768 Merge Strings Alternately (PRO)
⊣ 1769 Minimum Number of Operations to Move All Balls to Each Box
⊣ 1771 Maximize Palindrome Length From Subsequences
⊣ 1773 Count Items Matching a Rule
⊣ 1781 Sum of Beauty of All Substrings (PRO)
⊣ 1784 Check if Binary String Has at Most One Segment of Ones
⊣ 1790 Check if One String Swap Can Make Strings Equal
⊣ 1796 Second Largest Digit in a String
⊣ 1805 Number of Different Integers in a String
⊣ 1807 Evaluate the Bracket Pairs of a String (PRO)
⊣ 1812 Determine Color of a Chessboard Square
⊣ 1813 Sentence Similarity III
⊣ 1816 Truncate Sentence
⊣ 1830 Minimum Number of Operations to Make String Sorted
⊣ 1832 Check if the Sentence Is Pangram
⊣ 1839 Longest Substring Of All Vowels in Order (PRO)
⊣ 1844 Replace All Digits with Characters (PRO)
⊣ 1849 Splitting a String Into Descending Consecutive Values
⊣ 1850 Minimum Adjacent Swaps to Reach the Kth Smallest Number
⊣ 1857 Largest Color Value in a Directed Graph
⊣ 1859 Sorting the Sentence
⊣ 1864 Minimum Number of Swaps to Make the Binary String Alternating
⊣ 1869 Longer Contiguous Segments of Ones than Zeros
⊣ 1871 Jump Game VII
⊣ 1876 Substrings of Size Three with Distinct Characters (PRO)
⊣ 1880 Check if Word Equals Summation of Two Words (PRO)
⊣ 1881 Maximum Value after Insertion
⊣ 1888 Minimum Number of Flips to Make the Binary String Alternating
⊣ 1896 Minimum Cost to Change the Final Value of Expression
⊣ 1897 Redistribute Characters to Make All Strings Equal
⊣ 1898 Maximum Number of Removable Characters
⊣ 1903 Largest Odd Number in String (PRO)
⊣ 1904 The Number of Full Rounds You Have Played
⊣ 1910 Remove All Occurrences of a Substring (PRO)
⊣ 1915 Number of Wonderful Substrings
⊣ 1927 Sum Game
⊣ 1930 Unique Length-3 Palindromic Subsequences (PRO)
⊣ 1935 Maximum Number of Words You Can Type (PRO)
⊣ 1941 Check if All Characters Have Equal Number of Occurrences (PRO)
⊣ 1945 Sum of Digits of String After Convert
⊣ 1946 Largest Number After Mutating Substring
⊣ 1948 Delete Duplicate Folders in System (PRO)
⊣ 1957 Delete Characters to Make Fancy String (PRO)
⊣ 1960 Maximum Product of the Length of Two Palindromic Substrings
⊣ 1961 Check If String Is a Prefix of Array (PRO)
⊣ 1963 Minimum Number of Swaps to Make the String Balanced (PRO)
⊣ 1967 Number of Strings That Appear as Substrings in Word (PRO)
⊣ 1974 Minimum Time to Type Word Using Special Typewriter (PRO)
⊣ 1977 Number of Ways to Separate Numbers
⊣ 1980 Find Unique Binary String
⊣ 1985 Find the Kth Largest Integer in the Array
⊣ 1987 Number of Unique Good Subsequences
⊣ 2000 Reverse Prefix of Word (PRO)
⊣ 2002 Maximum Product of the Length of Two Palindromic Subsequences
⊣ 2011 Final Value of Variable After Performing Operations
⊣ 2014 Longest Subsequence Repeated k Times
⊣ 2019 The Score of Students Solving Math Expression
⊣ 2023 Number of Pairs of Strings With Concatenation Equal to Target
⊣ 2024 Maximize the Confusion of an Exam
⊣ 2027 Minimum Moves to Convert String
⊣ 2030 Smallest K-Length Subsequence With Occurrences of a Letter
⊣ 2038 Remove Colored Pieces if Both Neighbors are the Same Color
⊣ 2042 Check if Numbers Are Ascending in a Sentence
⊣ 2047 Number of Valid Words in a Sentence
⊣ 2053 Kth Distinct String in an Array
⊣ 2055 Plates Between Candles
⊣ 2056 Number of Valid Move Combinations On Chessboard
⊣ 2060 Check if an Original String Exists Given Two Encoded Strings
⊣ 2062 Count Vowel Substrings of a String
⊣ 2063 Vowels of All Substrings
⊣ 2068 Check Whether Two Strings are Almost Equivalent
⊣ 2075 Decode the Slanted Ciphertext
⊣ 2085 Count Common Words With One Occurrence
⊣ 2086 Minimum Number of Food Buckets to Feed the Hamsters
⊣ 2096 Step-By-Step Directions From a Binary Tree Node to Another
⊣ 2103 Rings and Rods
⊣ 2108 Find First Palindromic String in the Array
⊣ 2109 Adding Spaces to a String
⊣ 2114 Maximum Number of Words Found in Sentences
⊣ 2115 Find All Possible Recipes from Given Supplies
⊣ 2116 Check if a Parentheses String Can Be Valid
⊣ 2120 Execution of All Suffix Instructions Staying in a Grid
⊣ 2124 Check if All A's Appears Before All B's
⊣ 2125 Number of Laser Beams in a Bank
⊣ 2129 Capitalize the Title
⊣ 2131 Longest Palindrome by Concatenating Two Letter Words
⊣ 2135 Count Words Obtained After Adding a Letter
⊣ 2138 Divide a String Into Groups of Size k
⊣ 2147 Number of Ways to Divide a Long Corridor
⊣ 2156 Find Substring With Given Hash Value
⊣ 2157 Groups of Strings (PRO)
⊣ 2166 Design Bitset
⊣ 2167 Minimum Time to Remove All Cars Containing Illegal Goods
⊣ 2182 Construct String With Repeat Limit
⊣ 2185 Counting Words With a Given Prefix
⊣ 2186 Minimum Number of Steps to Make Two Strings Anagram II
⊣ 2193 Minimum Number of Moves to Make Palindrome
⊣ 2194 Cells in a Range on an Excel Sheet
⊣ 2207 Maximize Number of Subsequences in a String
⊣ 2209 Minimum White Tiles After Covering With Carpets
⊣ 2211 Count Collisions on a Road
⊣ 2213 Longest Substring of One Repeating Character
⊣ 2222 Number of Ways to Select Buildings
⊣ 2223 Sum of Scores of Built Strings
⊣ 2224 Minimum Number of Operations to Convert Time
⊣ 2227 Encrypt and Decrypt Strings
⊣ 2232 Minimize Result by Adding Parentheses to Expression
⊣ 2243 Calculate Digit Sum of a String
⊣ 2246 Longest Path With Different Adjacent Characters
⊣ 2255 Count Prefixes of a Given String
⊣ 2259 Remove Digit From Number to Maximize Result
⊣ 2262 Total Appeal of A String
⊣ 2264 Largest 3-Same-Digit Number in String
⊣ 2266 Count Number of Texts
⊣ 2269 Find the K-Beauty of a Number
⊣ 2272 Substring With Largest Variance
⊣ 2273 Find Resultant Array After Removing Anagrams
⊣ 2278 Percentage of Letter in String
⊣ 2283 Check if Number Has Equal Digit Count and Digit Value
⊣ 2284 Sender With Largest Word Count
⊣ 2287 Rearrange Characters to Make Target String
⊣ 2288 Apply Discount to Prices
⊣ 2296 Design a Text Editor
⊣ 2299 Strong Password Checker II
⊣ 2301 Match Substring After Replacement (PRO)
⊣ 2306 Naming a Company
⊣ 2309 Greatest English Letter in Upper and Lower Case
⊣ 2311 Longest Binary Subsequence Less Than or Equal to K
⊣ 2315 Count Asterisks
⊣ 2325 Decode the Message
⊣ 2337 Move Pieces to Obtain a String
⊣ 2343 Query Kth Smallest Trimmed Number
⊣ 2351 First Letter to Appear Twice
⊣ 2353 Design a Food Rating System
⊣ 2370 Longest Ideal Subsequence
⊣ 2375 Construct Smallest Number From DI String
⊣ 2379 Minimum Recolors to Get K Consecutive Black Blocks
⊣ 2380 Time Needed to Rearrange a Binary String
⊣ 2381 Shifting Letters II
⊣ 2384 Largest Palindromic Number
⊣ 2390 Removing Stars From a String
⊣ 2391 Minimum Amount of Time to Collect Garbage
⊣ 2399 Check Distances Between Same Letters
⊣ 2405 Optimal Partition of String
⊣ 2409 Count Days Spent Together
⊣ 2414 Length of the Longest Alphabetical Continuous Substring
⊣ 2416 Sum of Prefix Scores of Strings
⊣ 2418 Sort the People
⊣ 2423 Remove Letter To Equalize Frequency
⊣ 2430 Maximum Deletions on a String
⊣ 2434 Using a Robot to Print the Lexicographically Smallest String
⊣ 2437 Number of Valid Clock Times
⊣ 2446 Determine if Two Events Have Conflict
⊣ 2451 Odd String Difference
⊣ 2452 Words Within Two Edits of Dictionary (PRO)
⊣ 2456 Most Popular Video Creator
⊣ 2468 Split Message Based on Limit
⊣ 2472 Maximum Number of Non-overlapping Palindrome Substrings
⊣ 2478 Number of Beautiful Partitions
⊣ 2483 Minimum Penalty for a Shop
⊣ 2484 Count Palindromic Subsequences
⊣ 2486 Append Characters to String to Make Subsequence
⊣ 2490 Circular Sentence
⊣ 2496 Maximum Value of a String in an Array
⊣ 2506 Count Pairs Of Similar Strings
⊣ 2512 Reward Top K Students
⊣ 2514 Count Anagrams
⊣ 2515 Shortest Distance to Target String in a Circular Array
⊣ 2516 Take K of Each Character From Left and Right
⊣ 2522 Partition String Into Substrings With Values at Most K
⊣ 2531 Make Number of Distinct Characters Equal (PRO)
⊣ 2546 Apply Bitwise Operations to Make Strings Equal
⊣ 2559 Count Vowel Strings in Ranges
⊣ 2564 Substring XOR Queries (PRO)
⊣ 2565 Subsequence With the Minimum Score
⊣ 2573 Find the String with LCP
⊣ 2575 Find the Divisibility Array of a String
⊣ 2586 Count the Number of Vowel Strings in Range
⊣ 2606 Find the Substring With Maximum Cost
⊣ 2609 Find the Longest Balanced Substring of a Binary String
⊣ 2645 Minimum Additions to Make Valid String
⊣ 2663 Lexicographically Smallest Beautiful String
⊣ 2678 Number of Senior Citizens
⊣ 2696 Minimum String Length After Removing Substrings
⊣ 2697 Lexicographically Smallest Palindrome
⊣ 2707 Extra Characters in a String
⊣ 2710 Remove Trailing Zeros From a String
⊣ 2712 Minimum Cost to Make All Characters Equal
⊣ 2716 Minimize String Length
⊣ 2719 Count of Integers
⊣ 2730 Find the Longest Semi-Repetitive Substring
⊣ 2734 Lexicographically Smallest String After Substring Operation
⊣ 2744 Find Maximum Number of String Pairs
⊣ 2746 Decremental String Concatenation
⊣ 2767 Partition String Into Minimum Beautiful Substrings
⊣ 2781 Length of the Longest Valid Substring
⊣ 2785 Sort Vowels in a String
⊣ 2788 Split Strings by Separator
⊣ 2800 Shortest String That Contains Three Strings
⊣ 2801 Count Stepping Numbers in Range
⊣ 2810 Faulty Keyboard
⊣ 2825 Make String a Subsequence Using Cyclic Increments
⊣ 2828 Check if a String Is an Acronym of Words
⊣ 2833 Furthest Point From Origin
⊣ 2839 Check if Strings Can be Made Equal With Operations I
⊣ 2840 Check if Strings Can be Made Equal With Operations II
⊣ 2842 Count K-Subsequences of a String With Maximum Beauty
⊣ 2844 Minimum Operations to Make a Special Number
⊣ 2851 String Transformation
⊣ 2864 Maximum Odd Binary Number
⊣ 2896 Apply Operations to Make Two Strings Equal
⊣ 2900 Longest Unequal Adjacent Groups Subsequence I
⊣ 2901 Longest Unequal Adjacent Groups Subsequence II
⊣ 2904 Shortest and Lexicographically Smallest Beautiful String
⊣ 2911 Minimum Changes to Make K Semi-palindromes
⊣ 2914 Minimum Number of Changes to Make Binary String Beautiful
⊣ 2933 High-Access Employees
⊣ 2937 Make Three Strings Equal
⊣ 2938 Separate Black and White Balls
⊣ 2942 Find Words Containing Character
⊣ 2947 Count Beautiful Substrings I
⊣ 2949 Count Beautiful Substrings II
⊣ 2953 Count Complete Substrings
⊣ 2957 Remove Adjacent Almost-Equal Characters
⊣ 2976 Minimum Cost to Convert String I
⊣ 2977 Minimum Cost to Convert String II
⊣ 2981 Find Longest Special Substring That Occurs Thrice I
⊣ 2982 Find Longest Special Substring That Occurs Thrice II
⊣ 2983 Palindrome Rearrangement Queries
⊣ 2999 Count the Number of Powerful Integers
⊣ 3003 Maximize the Number of Partitions After Operations
⊣ 3006 Find Beautiful Indices in the Given Array I
⊣ 3008 Find Beautiful Indices in the Given Array II
⊣ 3014 Minimum Number of Pushes to Type Word I
⊣ 3016 Minimum Number of Pushes to Type Word II
⊣ 3019 Number of Changing Keys
⊣ 3029 Minimum Time to Revert Word to Initial State I
⊣ 3031 Minimum Time to Revert Word to Initial State II
⊣ 3035 Maximum Palindromes After Operations
⊣ 3042 Count Prefix and Suffix Pairs I
⊣ 3043 Find the Length of the Longest Common Prefix
⊣ 3045 Count Prefix and Suffix Pairs II
⊣ 3076 Shortest Uncommon Substring in an Array
⊣ 3081 Replace Question Marks in String to Minimize Its Value
⊣ 3083 Existence of a Substring in a String and Its Reverse
⊣ 3084 Count Substrings Starting and Ending with Given Character
⊣ 3085 Minimum Deletions to Make String K-Special
⊣ 3090 Maximum Length Substring With Two Occurrences
⊣ 3093 Longest Common Suffix Queries
⊣ 3106 Lexicographically Smallest String After Operations With Constraint
⊣ 3110 Score of a String
⊣ 3114 Latest Time You Can Obtain After Replacing Characters
⊣ 3120 Count the Number of Special Characters I
⊣ 3121 Count the Number of Special Characters II
⊣ 3136 Valid Word
⊣ 3137 Minimum Number of Operations to Make Word K-Periodic
⊣ 3138 Minimum Length of Anagram Concatenation
⊣ 3143 Maximum Points Inside the Square
⊣ 3144 Minimum Substring Partition of Equal Character Frequency
⊣ 3146 Permutation Difference between Two Strings
⊣ 3163 String Compression III
⊣ 3168 Minimum Number of Chairs in a Waiting Room
⊣ 3170 Lexicographically Minimum String After Removing Stars
⊣ 3174 Clear Digits
⊣ 3210 Find the Encrypted String
⊣ 3211 Generate Binary Strings Without Adjacent Zeros (PRO)
⊣ 3213 Construct String with Minimum Cost
⊣ 3216 Lexicographically Smallest String After a Swap
⊣ 3223 Minimum Length of String After Operations
⊣ 3227 Vowels Game in a String
⊣ 3228 Maximum Number of Operations to Move Ones to the End (PRO)
⊣ 3234 Count the Number of Substrings With Dominant Ones
⊣ 3248 Snake in Matrix
⊣ 3258 Count Substrings That Satisfy K-Constraint I
⊣ 3260 Find the Largest Palindrome Divisible by K
⊣ 3261 Count Substrings That Satisfy K-Constraint II
⊣ 3271 Hash Divided String
⊣ 3274 Check if Two Chessboard Squares Have the Same Color
⊣ 3280 Convert Date to Binary
⊣ 3291 Minimum Number of Valid Strings to Form Target I
⊣ 3292 Minimum Number of Valid Strings to Form Target II
⊣ 3295 Report Spam Message
⊣ 3297 Count Substrings That Can Be Rearranged to Contain a String I
⊣ 3298 Count Substrings That Can Be Rearranged to Contain a String II
⊣ 3302 Find the Lexicographically Smallest Valid Sequence
⊣ 3303 Find the Occurrence of First Almost Equal Substring
⊣ 3305 Count of Substrings Containing Every Vowel and K Consonants I
⊣ 3306 Count of Substrings Containing Every Vowel and K Consonants II
⊣ 3316 Find Maximum Removals From Source String
⊣ 3320 Count The Number of Winning Sequences
⊣ 3324 Find the Sequence of Strings Appeared on the Screen
⊣ 3325 Count Substrings With K-Frequency Characters I
⊣ 3327 Check if DFS Strings Are Palindromes
⊣ 3330 Find the Original Typed String I
⊣ 3331 Find Subtree Sizes After Changes
⊣ 3333 Find the Original Typed String II
⊣ 3335 Total Characters in String After Transformations I
⊣ 3337 Total Characters in String After Transformations II
⊣ 3340 Check Balanced String
⊣ 3343 Count Number of Balanced Permutations
⊣ 3348 Smallest Divisible Digit Product II
⊣ 3352 Count K-Reducible Numbers Less Than N
⊣ 3361 Shift Distance Between Two Strings
⊣ 3365 Rearrange K Substrings to Form Target String
⊣ 3387 Maximize Amount After Two Days of Conversions
⊣ 3389 Minimum Operations to Make Character Frequencies Equal
⊣ 3399 Smallest Substring With Identical Characters II
⊣ 3403 Find the Lexicographically Largest String From the Box I
⊣ 3407 Substring Matching Pattern
⊣ 3412 Find Mirror Score of a String
⊣ 3435 Frequencies of Shortest Supersequences
⊣ 3438 Find Valid Pair of Adjacent Digits in String
⊣ 3441 Minimum Cost Good Caption
⊣ 3442 Maximum Difference Between Even and Odd Frequency I (PRO)
⊣ 3443 Maximum Manhattan Distance After K Changes (PRO)
⊣ 3445 Maximum Difference Between Even and Odd Frequency II
⊣ 3448 Count Substrings Divisible By Last Digit
⊣ 3455 Shortest Matching Substring
⊣ 3456 Find Special Substring of Length K
⊣ 3458 Select K Disjoint Special Substrings
⊣ 3461 Check If Digits Are Equal in String After Operations I
⊣ 3463 Check If Digits Are Equal in String After Operations II
⊣ 3472 Longest Palindromic Subsequence After at Most K Operations
⊣ 3474 Lexicographically Smallest Generated String
⊣ 3484 Design Spreadsheet
⊣ 3485 Longest Common Prefix of K Strings After Removal
⊣ 3498 Reverse Degree of a String
⊣ 3499 Maximize Active Section with Trade I
⊣ 3501 Maximize Active Section with Trade II
⊣ 3503 Longest Palindrome After Substring Concatenation I
⊣ 3504 Longest Palindrome After Substring Concatenation II
⊣ 3517 Smallest Palindromic Rearrangement I
⊣ 3518 Smallest Palindromic Rearrangement II
⊣ 3519 Count Numbers with Non-Decreasing Digits
⊣ 3522 Calculate Score After Performing Instructions
⊣ 3527 Find the Most Common Response
⊣ 3529 Count Cells in Overlapping Horizontal and Vertical Substrings
⊣ 3541 Find Most Frequent Vowel and Consonant
⊣ 3545 Minimum Deletions for At Most K Distinct Characters
⊣ 3556 Sum of Largest Prime Substrings
⊣ 3557 Find Maximum Number of Non Intersecting Substrings
⊣ 3561 Resulting String After Adjacent Removals
⊣ 3563 Lexicographically Smallest String After Adjacent Removals
⊣ 3579 Minimum Steps to Convert String with Operations
⊣ 3582 Generate Tag for Video Caption
⊣ 3597 Partition String
⊣ 3598 Longest Common Prefix Between Adjacent Strings After Removals
⊣ 3602 Hexadecimal and Hexatrigesimal Conversion
⊣ 3606 Coupon Code Validator (PRO)
⊣ 3612 Process String with Special Operations I
⊣ 3614 Process String with Special Operations II
⊣ 3615 Longest Palindromic Path in Graph
⊣ 3628 Maximum Number of Subsequences After One Inserting
⊣ 3664 Two-Letter Card Game
⊣ 3666 Minimum Operations to Equalize Binary String
⊣ 3675 Minimum Operations to Transform String
⊣ 3692 Majority Frequency Characters
⊣ 3694 Distinct Points Reachable After Substring Removal
⊣ 3703 Remove K-Balanced Substrings
⊣ 3707 Equal Score Substrings
⊣ 3713 Longest Balanced Substring I
⊣ 3714 Longest Balanced Substring II
⊣ 3720 Lexicographically Smallest Permutation Greater Than Target
⊣ 3734 Lexicographically Smallest Palindromic Permutation Greater Than Target
⊣ 3746 Minimum String Length After Balanced Removals (PRO)
⊣ 3750 Minimum Number of Flips to Reverse Binary String
⊣ 3756 Concatenate Non-Zero Digits and Multiply by Sum II
⊣ 3760 Maximum Substrings With Distinct Start
⊣ 3775 Reverse Words With Same Vowel Count
⊣ 3777 Minimum Deletions to Make Alternating Substring (PRO)
⊣ 3781 Maximum Score After Binary Swaps
⊣ 3784 Minimum Deletion Cost to Make All Characters Equal
⊣ 3794 Reverse String Prefix
⊣ 3798 Largest Even Number
⊣ 3799 Word Squares II
⊣ 3800 Minimum Cost to Make Two Binary Strings Equal
⊣ 3803 Count Residue Prefixes
⊣ 3805 Count Caesar Cipher Pairs
⊣ 3813 Vowel-Consonant Score
⊣ 3816 Lexicographically Smallest String After Deleting Duplicate Characters
⊣ 3823 Reverse Letters Then Special Characters in a String
⊣ 3838 Weighted Word Mapping
⊣ 3839 Number of Prefix Connected Groups
⊣ 3841 Palindromic Path Queries in a Tree
⊣ 3844 Longest Almost-Palindromic Substring
⊣ 3849 Maximum Bitwise XOR After Rearrangement