string question.txt

3. Longest Substring Without Repeating Characters
35.9%
Med.

5. Longest Palindromic Substring
34.9%
Med.

6. Zigzag Conversion
50.1%
Med.

8. String to Integer (atoi)
18.4%
Med.

10. Regular Expression Matching
28.7%
Hard

12. Integer to Roman
67.1%
Med.

13. Roman to Integer
63.5%
Easy

14. Longest Common Prefix
44.4%
Easy

17. Letter Combinations of a Phone Number
62.5%
Med.

20. Valid Parentheses
41.5%
Easy

22. Generate Parentheses
76.0%
Med.

28. Find the Index of the First Occurrence in a String
44.0%
Easy

30. Substring with Concatenation of All Words
32.6%
Hard

32. Longest Valid Parentheses
35.2%
Hard

38. Count and Say
57.2%
Med.

43. Multiply Strings
41.4%
Med.

44. Wildcard Matching
29.0%
Hard

49. Group Anagrams
69.9%
Med.

58. Length of Last Word
54.7%
Easy

65. Valid Number
20.8%
Hard

67. Add Binary
54.8%
Easy

68. Text Justification
46.2%
Hard

71. Simplify Path
45.5%
Med.

72. Edit Distance
57.8%
Med.

76. Minimum Window Substring
44.2%
Hard

79. Word Search
44.2%
Med.

87. Scramble String
41.2%
Hard

91. Decode Ways
35.8%
Med.

93. Restore IP Addresses
51.8%
Med.

97. Interleaving String
41.0%
Med.

115. Distinct Subsequences
48.9%
Hard

125. Valid Palindrome
49.5%
Easy

126. Word Ladder II
27.1%
Hard

127. Word Ladder
41.1%
Hard

131. Palindrome Partitioning
70.8%
Med.

132. Palindrome Partitioning II
34.6%
Hard

139. Word Break
47.6%
Med.

140. Word Break II
52.4%
Hard

151. Reverse Words in a String
48.3%
Med.

159. Longest Substring with At Most Two Distinct Characters
55.9%
Med.

161. One Edit Distance
34.4%
Med.

165. Compare Version Numbers
41.7%
Med.

166. Fraction to Recurring Decimal
25.6%
Med.

168. Excel Sheet Column Title
42.4%
Easy

171. Excel Sheet Column Number
65.0%
Easy

179. Largest Number
40.5%
Med.

186. Reverse Words in a String II
55.5%
Med.

187. Repeated DNA Sequences
50.2%
Med.

205. Isomorphic Strings
46.1%
Easy

208. Implement Trie (Prefix Tree)
67.0%
Med.

211. Design Add and Search Words Data Structure
46.3%
Med.

212. Word Search II
36.8%
Hard

214. Shortest Palindrome
40.0%
Hard

224. Basic Calculator
44.4%
Hard

227. Basic Calculator II
44.8%
Med.

241. Different Ways to Add Parentheses
71.9%
Med.

242. Valid Anagram
65.7%
Easy

243. Shortest Word Distance
65.6%
Easy

244. Shortest Word Distance II
61.6%
Med.

245. Shortest Word Distance III
58.8%
Med.

246. Strobogrammatic Number
47.6%
Easy

247. Strobogrammatic Number II
52.8%
Med.

248. Strobogrammatic Number III
42.3%
Hard

249. Group Shifted Strings
66.6%
Med.

257. Binary Tree Paths
65.3%
Easy

266. Palindrome Permutation
68.0%
Easy

267. Palindrome Permutation II
41.9%
Med.

269. Alien Dictionary
36.3%
Hard

271. Encode and Decode Strings
48.4%
Med.

273. Integer to English Words
34.1%
Hard

282. Expression Add Operators
40.7%
Hard

288. Unique Word Abbreviation
26.7%
Med.

290. Word Pattern
42.6%
Easy

291. Word Pattern II
48.5%
Med.

293. Flip Game
64.8%
Easy

297. Serialize and Deserialize Binary Tree
58.0%
Hard

299. Bulls and Cows
50.9%
Med.

301. Remove Invalid Parentheses
48.8%
Hard

306. Additive Number
32.1%
Med.

316. Remove Duplicate Letters
50.5%
Med.

318. Maximum Product of Word Lengths
60.3%
Med.

320. Generalized Abbreviation
59.9%
Med.

331. Verify Preorder Serialization of a Binary Tree
45.7%
Med.

336. Palindrome Pairs
35.8%
Hard

340. Longest Substring with At Most K Distinct Characters
49.2%
Med.

344. Reverse String
79.3%
Easy

345. Reverse Vowels of a String
55.8%
Easy

358. Rearrange String k Distance Apart
39.2%
Hard

383. Ransom Note
63.3%
Easy

385. Mini Parser
39.3%
Med.

387. First Unique Character in a String
62.9%
Easy

388. Longest Absolute File Path
48.0%
Med.

389. Find the Difference
59.5%
Easy

392. Is Subsequence
48.1%
Easy

394. Decode String
60.3%
Med.

395. Longest Substring with At Least K Repeating Characters
45.3%
Med.

399. Evaluate Division
62.5%
Med.

402. Remove K Digits
34.2%
Med.

408. Valid Word Abbreviation
36.4%
Easy

409. Longest Palindrome
55.4%
Easy

411. Minimum Unique Word Abbreviation
39.9%
Hard

412. Fizz Buzz
73.5%
Easy

415. Add Strings
51.6%
Easy

418. Sentence Screen Fitting
36.3%
Med.

420. Strong Password Checker
14.2%
Hard

423. Reconstruct Original Digits from English
51.3%
Med.

424. Longest Repeating Character Replacement
55.9%
Med.

425. Word Squares
53.7%
Hard

428. Serialize and Deserialize N-ary Tree
67.8%
Hard

433. Minimum Genetic Mutation
54.8%
Med.

434. Number of Segments in a String
36.3%
Easy

438. Find All Anagrams in a String
51.6%
Med.

439. Ternary Expression Parser
61.5%
Med.

443. String Compression
56.6%
Med.

449. Serialize and Deserialize BST
58.2%
Med.

451. Sort Characters By Frequency
73.4%
Med.

459. Repeated Substring Pattern
46.4%
Easy

466. Count The Repetitions
31.1%
Hard

467. Unique Substrings in Wraparound String
40.5%
Med.

468. Validate IP Address
27.6%
Med.

471. Encode String with Shortest Length
50.5%
Hard

472. Concatenated Words
49.3%
Hard

474. Ones and Zeroes
48.2%
Med.

481. Magical String
51.8%
Med.

482. License Key Formatting
44.3%
Easy

484. Find Permutation
67.0%
Med.

488. Zuma Game
32.1%
Hard

499. The Maze III
49.7%
Hard

500. Keyboard Row
71.7%
Easy

514. Freedom Trail
58.9%
Hard

516. Longest Palindromic Subsequence
63.4%
Med.

520. Detect Capital
56.2%
Easy

521. Longest Uncommon Subsequence I
61.0%
Easy

522. Longest Uncommon Subsequence II
42.4%
Med.

524. Longest Word in Dictionary through Deleting
51.5%
Med.

527. Word Abbreviation
61.4%
Hard

535. Encode and Decode TinyURL
86.6%
Med.

536. Construct Binary Tree from String
57.7%
Med.

537. Complex Number Multiplication
72.1%
Med.

539. Minimum Time Difference
62.2%
Med.

541. Reverse String II
51.4%
Easy

544. Output Contest Matches
77.3%
Med.

551. Student Attendance Record I
49.4%
Easy

555. Split Concatenated Strings
43.4%
Med.

556. Next Greater Element III
34.3%
Med.

557. Reverse Words in a String III
83.4%
Easy

564. Find the Closest Palindrome
31.6%
Hard

567. Permutation in String
46.6%
Med.

583. Delete Operation for Two Strings
62.9%
Med.

588. Design In-Memory File System
48.1%
Hard

591. Tag Validator
38.9%
Hard

592. Fraction Addition and Subtraction
66.1%
Med.

599. Minimum Index Sum of Two Lists
56.9%
Easy

604. Design Compressed String Iterator
40.0%
Easy

606. Construct String from Binary Tree
69.7%
Med.

609. Find Duplicate File in System
67.6%
Med.

616. Add Bold Tag in String
50.5%
Med.

635. Design Log Storage System
59.2%
Med.

639. Decode Ways II
30.9%
Hard

640. Solve the Equation
44.3%
Med.

642. Design Search Autocomplete System
49.2%
Hard

647. Palindromic Substrings
71.0%
Med.

648. Replace Words
68.1%
Med.

649. Dota2 Senate
48.2%
Med.

657. Robot Return to Origin
76.0%
Easy

664. Strange Printer
61.0%
Hard

676. Implement Magic Dictionary
57.9%
Med.

677. Map Sum Pairs
56.9%
Med.

678. Valid Parenthesis String
38.4%
Med.

680. Valid Palindrome II
42.0%
Easy

681. Next Closest Time
46.8%
Med.

686. Repeated String Match
36.0%
Med.

691. Stickers to Spell Word
49.6%
Hard

692. Top K Frequent Words
58.7%
Med.

696. Count Binary Substrings
65.7%
Easy

709. To Lower Case
83.8%
Easy

712. Minimum ASCII Delete Sum for Two Strings
65.4%
Med.

720. Longest Word in Dictionary
53.0%
Med.

721. Accounts Merge
58.5%
Med.

722. Remove Comments
39.0%
Med.

726. Number of Atoms
65.0%
Hard

727. Minimum Window Subsequence
43.5%
Hard

730. Count Different Palindromic Subsequences
46.0%
Hard

734. Sentence Similarity
44.5%
Easy

736. Parse Lisp Expression
52.1%
Hard

737. Sentence Similarity II
50.4%
Med.

745. Prefix and Suffix Search
41.2%
Hard

748. Shortest Completing Word
60.6%
Easy

751. IP to CIDR
55.8%
Med.

752. Open the Lock
60.5%
Med.

758. Bold Words in String
51.8%
Med.

761. Special Binary String
62.6%
Hard

763. Partition Labels
80.1%
Med.

767. Reorganize String
55.5%
Med.

770. Basic Calculator IV
54.9%
Hard

771. Jewels and Stones
89.0%
Easy

772. Basic Calculator III
51.5%
Hard

777. Swap Adjacent in LR String
37.3%
Med.

784. Letter Case Permutation
74.6%
Med.

791. Custom Sort String
71.4%
Med.

792. Number of Matching Subsequences
50.7%
Med.

796. Rotate String
63.3%
Easy

800. Similar RGB Color
67.7%
Easy

804. Unique Morse Code Words
83.0%
Easy

806. Number of Lines To Write String
69.7%
Easy

809. Expressive Words
46.3%
Med.

811. Subdomain Visit Count
76.6%
Med.

816. Ambiguous Coordinates
56.5%
Med.

819. Most Common Word
44.4%
Easy

820. Short Encoding of Words
60.5%
Med.

821. Shortest Distance to a Character
71.9%
Easy

824. Goat Latin
68.9%
Easy

828. Count Unique Characters of All Substrings of a Given String
52.7%
Hard

830. Positions of Large Groups
52.6%
Easy

831. Masking Personal Information
49.8%
Med.

833. Find And Replace in String
51.7%
Med.

838. Push Dominoes
57.3%
Med.

839. Similar String Groups
55.3%
Hard

842. Split Array into Fibonacci Sequence
39.2%
Med.

843. Guess the Word
38.3%
Hard

844. Backspace String Compare
49.3%
Easy

848. Shifting Letters
44.8%
Med.

854. K-Similar Strings
40.0%
Hard

856. Score of Parentheses
63.9%
Med.

859. Buddy Strings
33.4%
Easy

880. Decoded String at Index
36.5%
Med.

884. Uncommon Words from Two Sentences
75.2%
Easy

890. Find and Replace Pattern
76.8%
Med.

893. Groups of Special-Equivalent Strings
72.4%
Med.

899. Orderly Queue
66.0%
Hard

902. Numbers At Most N Given Digit Set
42.8%
Hard

903. Valid Permutations for DI Sequence
57.0%
Hard

916. Word Subsets
51.6%
Med.

917. Reverse Only Letters
66.0%
Easy

921. Minimum Add to Make Parentheses Valid
74.7%
Med.

925. Long Pressed Name
32.3%
Easy

926. Flip String to Monotone Increasing
61.5%
Med.

929. Unique Email Addresses
67.4%
Easy

936. Stamping The Sequence
62.2%
Hard

937. Reorder Data in Log Files
56.6%
Med.

940. Distinct Subsequences II
43.3%
Hard

942. DI String Match
79.5%
Easy

943. Find the Shortest Superstring
44.3%
Hard

944. Delete Columns to Make Sorted
74.7%
Easy

949. Largest Time for Given Digits
35.4%
Med.

953. Verifying an Alien Dictionary
55.4%
Easy

955. Delete Columns to Make Sorted II
35.3%
Med.

960. Delete Columns to Make Sorted III
58.3%
Hard

966. Vowel Spellchecker
51.4%
Med.

972. Equal Rational Numbers
44.3%
Hard

981. Time Based Key-Value Store
49.3%
Med.

984. String Without AAA or BBB
44.3%
Med.

988. Smallest String Starting From Leaf
60.6%
Med.

990. Satisfiability of Equality Equations
50.8%
Med.

1002. Find Common Characters
74.6%
Easy

1003. Check If Word Is Valid After Substitutions
60.3%
Med.

1016. Binary String With Substrings Representing 1 To N
57.8%
Med.

1021. Remove Outermost Parentheses
84.4%
Easy

1023. Camelcase Matching
63.0%
Med.

1028. Recover a Tree From Preorder Traversal
75.2%
Hard

1032. Stream of Characters
52.2%
Hard

1041. Robot Bounded In Circle
56.0%
Med.

1044. Longest Duplicate Substring
30.6%
Hard

1047. Remove All Adjacent Duplicates In String
70.6%
Easy

1048. Longest String Chain
61.5%
Med.

1055. Shortest Way to Form String
60.6%
Med.

1058. Minimize Rounding Error to Meet Target
45.3%
Med.

1061. Lexicographically Smallest Equivalent String
76.6%
Med.

1062. Longest Repeating Substring
62.6%
Med.

1065. Index Pairs of a String
67.9%
Easy

1071. Greatest Common Divisor of Strings
52.2%
Easy

1078. Occurrences After Bigram
63.6%
Easy

1079. Letter Tile Possibilities
76.4%
Med.

1081. Smallest Subsequence of Distinct Characters
61.5%
Med.

1087. Brace Expansion
66.6%
Med.

1092. Shortest Common Supersequence
59.7%
Hard

1096. Brace Expansion II
63.5%
Hard

1100. Find K-Length Substrings With No Repeated Characters
75.0%
Med.

1106. Parsing A Boolean Expression
70.5%
Hard

1108. Defanging an IP Address
89.4%
Easy

1111. Maximum Nesting Depth of Two Valid Parentheses Strings
72.1%
Med.

1119. Remove Vowels from a String
91.2%
Easy

1138. Alphabet Board Path
51.5%
Med.

1143. Longest Common Subsequence
57.8%
Med.

1147. Longest Chunked Palindrome Decomposition
58.6%
Hard

1153. String Transforms Into Another String
34.9%
Hard

1154. Day of the Year
48.8%
Easy

1156. Swap For Longest Repeated Character Substring
43.8%
Med.

1160. Find Words That Can Be Formed by Characters
70.8%
Easy

1163. Last Substring in Lexicographical Order
34.5%
Hard

1165. Single-Row Keyboard
87.6%
Easy

1166. Design File System
63.6%
Med.

1169. Invalid Transactions
31.1%
Med.

1170. Compare Strings by Frequency of the Smallest Character
62.6%
Med.

1177. Can Make Palindrome from Substring
39.7%
Med.

1178. Number of Valid Words for Each Puzzle
46.9%
Hard

1180. Count Substrings with Only One Distinct Letter
80.3%
Easy

1181. Before and After Puzzle
46.2%
Med.

1189. Maximum Number of Balloons
59.7%
Easy

1190. Reverse Substrings Between Each Pair of Parentheses
71.8%
Med.

1202. Smallest String With Swaps
58.9%
Med.

1208. Get Equal Substrings Within Budget
58.5%
Med.

1209. Remove All Adjacent Duplicates in String II
58.8%
Med.

1216. Valid Palindrome III
49.2%
Hard

1221. Split a String in Balanced Strings
86.5%
Easy

1233. Remove Sub-Folders from the Filesystem
75.6%
Med.

1234. Replace the Substring for Balanced String
38.8%
Med.

1236. Web Crawler
68.2%
Med.

1239. Maximum Length of a Concatenated String with Unique Characters
54.1%
Med.

1247. Minimum Swaps to Make Strings Equal
64.4%
Med.

1249. Minimum Remove to Make Valid Parentheses
69.9%
Med.

1255. Maximum Score Words Formed by Letters
81.8%
Hard

1256. Encode Number
69.9%
Med.

1257. Smallest Common Region
67.9%
Med.

1258. Synonymous Sentences
56.5%
Med.

1268. Search Suggestions System
65.1%
Med.

1271. Hexspeak
58.2%
Easy

1278. Palindrome Partitioning III
61.3%
Hard

1286. Iterator for Combination
73.4%
Med.

1297. Maximum Number of Occurrences of a Substring
52.6%
Med.

1307. Verbal Arithmetic Puzzle
34.7%
Hard

1309. Decrypt String from Alphabet to Integer Mapping
80.0%
Easy

1312. Minimum Insertion Steps to Make a String Palindrome
71.7%
Hard

1316. Distinct Echo Substrings
51.5%
Hard

1320. Minimum Distance to Type a Word Using Two Fingers
59.0%
Hard

1324. Print Words Vertically
65.2%
Med.

1328. Break a Palindrome
51.6%
Med.

1332. Remove Palindromic Subsequences
76.6%
Easy

1347. Minimum Number of Steps to Make Two Strings Anagram
82.1%
Med.

1358. Number of Substrings Containing All Three Characters
68.2%
Med.

1360. Number of Days Between Two Dates
50.8%
Easy

1366. Rank Teams by Votes
58.8%
Med.

1370. Increasing Decreasing String
76.6%
Easy

1371. Find the Longest Substring Containing Vowels in Even Counts
76.3%
Med.

1374. Generate a String With Characters That Have Odd Counts
78.1%
Easy

1392. Longest Happy Prefix
47.4%
Hard

1396. Design Underground System
74.8%
Med.

1397. Find All Good Strings
43.0%
Hard

1400. Construct K Palindrome Strings
62.0%
Med.

1404. Number of Steps to Reduce a Number in Binary Representation to One
61.4%
Med.

1405. Longest Happy String
65.5%
Med.

1408. String Matching in an Array
64.3%
Easy

1410. HTML Entity Parser
50.5%
Med.

1415. The k-th Lexicographical String of All Happy Strings of Length n
74.7%
Med.

1416. Restore The Array
47.1%
Hard

1417. Reformat The String
52.2%
Easy

1418. Display Table of Food Orders in a Restaurant
75.4%
Med.

1419. Minimum Number of Frogs Croaking
50.5%
Med.

1422. Maximum Score After Splitting a String
62.2%
Easy

1427. Perform String Shifts
54.9%
Easy

1433. Check If a String Can Break Another String
70.0%
Med.

1436. Destination City
79.5%
Easy

1446. Consecutive Characters
60.1%
Easy

1447. Simplified Fractions
67.6%
Med.

1451. Rearrange Words in a Sentence
65.3%
Med.

1452. People Whose List of Favorite Companies Is Not a Subset of Another List
58.9%
Med.

1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence
68.9%
Easy

1456. Maximum Number of Vowels in a Substring of Given Length
59.4%
Med.

1461. Check If a String Contains All Binary Codes of Size K
56.5%
Med.

1487. Making File Names Unique
37.5%
Med.

1496. Path Crossing
62.4%
Easy

1505. Minimum Possible Integer After at Most K Adjacent Swaps On Digits
40.0%
Hard

1507. Reformat Date
67.0%
Easy

1513. Number of Substrings With Only 1s
47.3%
Med.

1520. Maximum Number of Non-Overlapping Substrings
39.7%
Hard

1525. Number of Good Ways to Split a String
68.3%
Med.

1528. Shuffle String
85.0%
Easy

1529. Minimum Suffix Flips
73.4%
Med.

1531. String Compression II
52.2%
Hard

1540. Can Convert String in K Moves
35.6%
Med.

1541. Minimum Insertions to Balance a Parentheses String
52.7%
Med.

1542. Find Longest Awesome Substring
44.5%
Hard

1544. Make The String Great
68.2%
Easy

1545. Find Kth Bit in Nth Binary String
70.3%
Med.

1554. Strings Differ by One Character
41.4%
Med.

1556. Thousand Separator
53.7%
Easy

1573. Number of Ways to Split a String
33.6%
Med.

1576. Replace All ?'s to Avoid Consecutive Repeating Characters
45.7%
Easy

1578. Minimum Time to Make Rope Colorful
63.6%
Med.

1585. Check If String Is Transformable With Substring Sort Operations
48.8%
Hard

1592. Rearrange Spaces Between Words
43.9%
Easy

1593. Split a String Into the Max Number of Unique Substrings
68.2%
Med.

1597. Build Binary Expression Tree From Infix Expression
62.5%
Hard

1598. Crawler Log Folder
71.7%
Easy

1604. Alert Using Same Key-Card Three or More Times in a One Hour Period
46.0%
Med.

1614. Maximum Nesting Depth of the Parentheses
84.1%
Easy

1616. Split Two Strings to Make Palindrome
31.1%
Med.

1618. Maximum Font to Fit a Sentence in a Screen
61.1%
Med.

1624. Largest Substring Between Two Equal Characters
68.5%
Easy

1625. Lexicographically Smallest String After Applying Operations
65.7%
Med.

1629. Slowest Key
59.2%
Easy

1638. Count Substrings That Differ by One Character
71.4%
Med.

1639. Number of Ways to Form a Target String Given a Dictionary
50.6%
Hard

1647. Minimum Deletions to Make Character Frequencies Unique
61.3%
Med.

1653. Minimum Deletions to Make String Balanced
65.7%
Med.

1657. Determine if Two Strings Are Close
54.2%
Med.

1662. Check If Two String Arrays are Equivalent
85.6%
Easy

1663. Smallest String With A Given Numeric Value
67.0%
Med.

1668. Maximum Repeating Substring
39.1%
Easy

1678. Goal Parser Interpretation
87.5%
Easy

1682. Longest Palindromic Subsequence II
50.1%
Med.

1684. Count the Number of Consistent Strings
88.1%
Easy

1689. Partitioning Into Minimum Number Of Deci-Binary Numbers
88.7%
Med.

1694. Reformat Phone Number
66.5%
Easy

1698. Number of Distinct Substrings in a String
64.5%
Med.

1702. Maximum Binary String After Change
46.9%
Med.

1704. Determine if String Halves Are Alike
78.6%
Easy

1717. Maximum Score From Removing Substrings
62.8%
Med.

1736. Latest Time by Replacing Hidden Digits
43.1%
Easy

1737. Change Minimum Characters to Satisfy One of Three Conditions
37.0%
Med.

1745. Palindrome Partitioning IV
44.5%
Hard

1750. Minimum Length of String After Deleting Similar Ends
55.9%
Med.

1754. Largest Merge Of Two Strings
49.8%
Med.

1758. Minimum Changes To Make Alternating Binary String
63.7%
Easy

1759. Count Number of Homogenous Substrings
57.6%
Med.

1763. Longest Nice Substring
61.3%
Easy

1768. Merge Strings Alternately
81.3%
Easy

1769. Minimum Number of Operations to Move All Balls to Each Box
86.0%
Med.

1771. Maximize Palindrome Length From Subsequences
36.8%
Hard

1772. Sort Features by Popularity
65.8%
Med.

1773. Count Items Matching a Rule
84.7%
Easy

1781. Sum of Beauty of All Substrings
68.7%
Med.

1784. Check if Binary String Has at Most One Segment of Ones
39.2%
Easy

1790. Check if One String Swap Can Make Strings Equal
46.0%
Easy

1794. Count Pairs of Equal Substrings With Minimum Difference
65.3%
Med.

1796. Second Largest Digit in a String
51.1%
Easy

1804. Implement Trie II (Prefix Tree)
63.0%
Med.

1805. Number of Different Integers in a String
38.7%
Easy

1807. Evaluate the Bracket Pairs of a String
67.3%
Med.

1812. Determine Color of a Chessboard Square
79.0%
Easy

1813. Sentence Similarity III
48.8%
Med.

1816. Truncate Sentence
85.8%
Easy

1830. Minimum Number of Operations to Make String Sorted
50.2%
Hard

1832. Check if the Sentence Is Pangram
83.6%
Easy

1839. Longest Substring Of All Vowels in Order
49.7%
Med.

1842. Next Palindrome Using Same Digits
53.6%
Hard

1844. Replace All Digits with Characters
81.8%
Easy

1849. Splitting a String Into Descending Consecutive Values
36.6%
Med.

1850. Minimum Adjacent Swaps to Reach the Kth Smallest Number
71.5%
Med.

1859. Sorting the Sentence
83.5%
Easy

1864. Minimum Number of Swaps to Make the Binary String Alternating
43.6%
Med.

1869. Longer Contiguous Segments of Ones than Zeros
61.4%
Easy

1871. Jump Game VII
25.2%
Med.

1876. Substrings of Size Three with Distinct Characters
74.6%
Easy

1880. Check if Word Equals Summation of Two Words
74.5%
Easy

1881. Maximum Value after Insertion
38.3%
Med.

1888. Minimum Number of Flips to Make the Binary String Alternating
40.3%
Med.

1896. Minimum Cost to Change the Final Value of Expression
53.4%
Hard

1897. Redistribute Characters to Make All Strings Equal
67.0%
Easy

1898. Maximum Number of Removable Characters
44.8%
Med.

1903. Largest Odd Number in String
64.1%
Easy

1904. The Number of Full Rounds You Have Played
43.8%
Med.

1910. Remove All Occurrences of a Substring
78.2%
Med.

1915. Number of Wonderful Substrings
66.8%
Med.

1927. Sum Game
47.9%
Med.

1930. Unique Length-3 Palindromic Subsequences
66.1%
Med.

1933. Check if String Is Decomposable Into Value-Equal Substrings
51.3%
Easy

1935. Maximum Number of Words You Can Type
74.1%
Easy

1941. Check if All Characters Have Equal Number of Occurrences
78.2%
Easy

1945. Sum of Digits of String After Convert
74.9%
Easy

1946. Largest Number After Mutating Substring
36.4%
Med.

1948. Delete Duplicate Folders in System
54.8%
Hard

1957. Delete Characters to Make Fancy String
71.9%
Easy

1960. Maximum Product of the Length of Two Palindromic Substrings
31.4%
Hard

1961. Check If String Is a Prefix of Array
52.7%
Easy

1963. Minimum Number of Swaps to Make the String Balanced
78.0%
Med.

1967. Number of Strings That Appear as Substrings in Word
81.5%
Easy

1974. Minimum Time to Type Word Using Special Typewriter
76.0%
Easy

1977. Number of Ways to Separate Numbers
21.0%
Hard

1980. Find Unique Binary String
74.7%
Med.

1985. Find the Kth Largest Integer in the Array
46.1%
Med.

1987. Number of Unique Good Subsequences
52.0%
Hard

2000. Reverse Prefix of Word
86.3%
Easy

2002. Maximum Product of the Length of Two Palindromic Subsequences
60.9%
Med.

2011. Final Value of Variable After Performing Operations
89.5%
Easy

2014. Longest Subsequence Repeated k Times
54.9%
Hard

2019. The Score of Students Solving Math Expression
33.4%
Hard

2023. Number of Pairs of Strings With Concatenation Equal to Target
75.1%
Med.

2024. Maximize the Confusion of an Exam
67.8%
Med.

2027. Minimum Moves to Convert String
55.8%
Easy

2030. Smallest K-Length Subsequence With Occurrences of a Letter
39.5%
Hard

2038. Remove Colored Pieces if Both Neighbors are the Same Color
62.8%
Med.

2042. Check if Numbers Are Ascending in a Sentence
70.6%
Easy

2047. Number of Valid Words in a Sentence
29.5%
Easy

2053. Kth Distinct String in an Array
82.0%
Easy

2055. Plates Between Candles
45.7%
Med.

2056. Number of Valid Move Combinations On Chessboard
50.9%
Hard

2060. Check if an Original String Exists Given Two Encoded Strings
43.7%
Hard

2062. Count Vowel Substrings of a String
69.2%
Easy

2063. Vowels of All Substrings
54.3%
Med.

2067. Number of Equal Count Substrings
45.4%
Med.

2068. Check Whether Two Strings are Almost Equivalent
63.9%
Easy

2075. Decode the Slanted Ciphertext
49.1%
Med.

2083. Substrings That Begin and End With the Same Letter
74.1%
Med.

2085. Count Common Words With One Occurrence
71.6%
Easy

2086. Minimum Number of Food Buckets to Feed the Hamsters
46.9%
Med.

2096. Step-By-Step Directions From a Binary Tree Node to Another
56.3%
Med.

2103. Rings and Rods
80.9%
Easy

2108. Find First Palindromic String in the Array
83.9%
Easy

2109. Adding Spaces to a String
71.8%
Med.

2114. Maximum Number of Words Found in Sentences
86.6%
Easy

2115. Find All Possible Recipes from Given Supplies
50.4%
Med.

2116. Check if a Parentheses String Can Be Valid
32.4%
Med.

2120. Execution of All Suffix Instructions Staying in a Grid
82.4%
Med.

2124. Check if All A's Appears Before All B's
72.2%
Easy

2125. Number of Laser Beams in a Bank
85.5%
Med.

2129. Capitalize the Title
65.4%
Easy

2131. Longest Palindrome by Concatenating Two Letter Words
47.9%
Med.

2135. Count Words Obtained After Adding a Letter
43.2%
Med.

2138. Divide a String Into Groups of Size k
67.2%
Easy

2147. Number of Ways to Divide a Long Corridor
49.1%
Hard

2156. Find Substring With Given Hash Value
24.1%
Hard

2157. Groups of Strings
26.2%
Hard

2166. Design Bitset
32.7%
Med.

2167. Minimum Time to Remove All Cars Containing Illegal Goods
41.7%
Hard

2168. Unique Substrings With Equal Digit Frequency
60.5%
Med.

2182. Construct String With Repeat Limit
71.0%
Med.

2185. Counting Words With a Given Prefix
78.7%
Easy

2186. Minimum Number of Steps to Make Two Strings Anagram II
72.8%
Med.

2193. Minimum Number of Moves to Make Palindrome
51.2%
Hard

2194. Cells in a Range on an Excel Sheet
83.9%
Easy

2207. Maximize Number of Subsequences in a String
35.2%
Med.

2209. Minimum White Tiles After Covering With Carpets
37.1%
Hard

2211. Count Collisions on a Road
43.9%
Med.

2213. Longest Substring of One Repeating Character
32.3%
Hard

2222. Number of Ways to Select Buildings
50.8%
Med.

2223. Sum of Scores of Built Strings
41.0%
Hard

2224. Minimum Number of Operations to Convert Time
65.4%
Easy

2227. Encrypt and Decrypt Strings
41.0%
Hard

2232. Minimize Result by Adding Parentheses to Expression
67.9%
Med.

2243. Calculate Digit Sum of a String
66.3%
Easy

2246. Longest Path With Different Adjacent Characters
54.1%
Hard

2255. Count Prefixes of a Given String
73.1%
Easy

2259. Remove Digit From Number to Maximize Result
46.4%
Easy

2262. Total Appeal of A String
55.8%
Hard

2264. Largest 3-Same-Digit Number in String
69.0%
Easy

2266. Count Number of Texts
48.2%
Med.

2268. Minimum Number of Keypresses
71.2%
Med.

2269. Find the K-Beauty of a Number
60.9%
Easy

2273. Find Resultant Array After Removing Anagrams
58.8%
Easy

2278. Percentage of Letter in String
74.2%
Easy

2283. Check if Number Has Equal Digit Count and Digit Value
72.4%
Easy

2284. Sender With Largest Word Count
57.6%
Med.

2287. Rearrange Characters to Make Target String
59.7%
Easy

2288. Apply Discount to Prices
31.8%
Med.

2296. Design a Text Editor
46.6%
Hard

2299. Strong Password Checker II
54.9%
Easy

2301. Match Substring After Replacement
41.6%
Hard

2306. Naming a Company
46.3%
Hard

2309. Greatest English Letter in Upper and Lower Case
70.6%
Easy

2311. Longest Binary Subsequence Less Than or Equal to K
38.0%
Med.

2315. Count Asterisks
82.4%
Easy

2325. Decode the Message
85.0%
Easy

2330. Valid Palindrome IV
75.9%
Med.

2337. Move Pieces to Obtain a String
57.2%
Med.

2343. Query Kth Smallest Trimmed Number
44.6%
Med.

2351. First Letter to Appear Twice
73.9%
Easy

2370. Longest Ideal Subsequence
47.1%
Med.

2375. Construct Smallest Number From DI String
76.2%
Med.

2379. Minimum Recolors to Get K Consecutive Black Blocks
59.5%
Easy

2380. Time Needed to Rearrange a Binary String
51.2%
Med.

2381. Shifting Letters II
38.4%
Med.

2384. Largest Palindromic Number
36.0%
Med.

2390. Removing Stars From a String
76.8%
Med.

2391. Minimum Amount of Time to Collect Garbage
85.2%
Med.

2399. Check Distances Between Same Letters
70.8%
Easy

2405. Optimal Partition of String
78.0%
Med.

2408. Design SQL
78.3%
Med.

2409. Count Days Spent Together
45.8%
Easy

2414. Length of the Longest Alphabetical Continuous Substring
59.1%
Med.

2416. Sum of Prefix Scores of Strings
60.6%
Hard

2418. Sort the People
84.9%
Easy

2423. Remove Letter To Equalize Frequency
17.6%
Easy

2430. Maximum Deletions on a String
33.9%
Hard

2434. Using a Robot to Print the Lexicographically Smallest String
40.8%
Med.

2437. Number of Valid Clock Times
47.1%
Easy

2446. Determine if Two Events Have Conflict
51.8%
Easy

2450. Number of Distinct Binary Strings After Applying Operations
64.2%
Med.

2451. Odd String Difference
60.3%
Easy

2452. Words Within Two Edits of Dictionary
61.0%
Med.

2456. Most Popular Video Creator
44.2%
Med.

2468. Split Message Based on Limit
43.4%
Hard

2472. Maximum Number of Non-overlapping Palindrome Substrings
41.0%
Hard

2478. Number of Beautiful Partitions
32.0%
Hard

2483. Minimum Penalty for a Shop
67.4%
Med.

2484. Count Palindromic Subsequences
38.2%
Hard

2486. Append Characters to String to Make Subsequence
73.0%
Med.

2489. Number of Substrings With Fixed Ratio
55.9%
Med.

2490. Circular Sentence
70.8%
Easy

2496. Maximum Value of a String in an Array
72.8%
Easy

2506. Count Pairs Of Similar Strings
71.6%
Easy

2512. Reward Top K Students
45.4%
Med.

2514. Count Anagrams
34.2%
Hard

2515. Shortest Distance to Target String in a Circular Array
50.3%
Easy

2516. Take K of Each Character From Left and Right
51.9%
Med.

2522. Partition String Into Substrings With Values at Most K
46.6%
Med.

2531. Make Number of Distinct Characters Equal
26.7%
Med.

2539. Count the Number of Good Subsequences
52.3%
Med.

2546. Apply Bitwise Operations to Make Strings Equal
41.6%
Med.

2559. Count Vowel Strings in Ranges
53.4%
Med.

2564. Substring XOR Queries
33.8%
Med.

2565. Subsequence With the Minimum Score
32.2%
Hard

2573. Find the String with LCP
31.2%
Hard

2575. Find the Divisibility Array of a String
33.8%
Med.

2586. Count the Number of Vowel Strings in Range
74.3%
Easy

2590. Design a Todo List
58.2%
Med.

2606. Find the Substring With Maximum Cost
56.9%
Med.

2609. Find the Longest Balanced Substring of a Binary String
46.1%
Easy

2645. Minimum Additions to Make Valid String
50.1%
Med.

2663. Lexicographically Smallest Beautiful String
38.1%
Hard

2678. Number of Senior Citizens
81.5%
Easy

2696. Minimum String Length After Removing Substrings
77.5%
Easy

2697. Lexicographically Smallest Palindrome
81.5%
Easy

2707. Extra Characters in a String
57.4%
Med.

2710. Remove Trailing Zeros From a String
78.9%
Easy

2712. Minimum Cost to Make All Characters Equal
53.3%
Med.

2716. Minimize String Length
76.5%
Easy

2719. Count of Integers
34.9%
Hard

2730. Find the Longest Semi-Repetitive Substring
37.2%
Med.

2734. Lexicographically Smallest String After Substring Operation
32.1%
Med.

2743. Count Substrings Without Repeating Character
76.7%
Med.

2744. Find Maximum Number of String Pairs
81.2%
Easy

2746. Decremental String Concatenation
26.7%
Med.

2767. Partition String Into Minimum Beautiful Substrings
53.0%
Med.

2781. Length of the Longest Valid Substring
37.8%
Hard

2785. Sort Vowels in a String
80.7%
Med.

2788. Split Strings by Separator
74.9%
Easy

2800. Shortest String That Contains Three Strings
30.9%
Med.

2801. Count Stepping Numbers in Range
27.7%
Hard

2802. Find The K-th Lucky Number
76.7%
Med.

2810. Faulty Keyboard
83.5%
Easy

2825. Make String a Subsequence Using Cyclic Increments
65.6%
Med.

2828. Check if a String Is an Acronym of Words
82.8%
Easy

2833. Furthest Point From Origin
64.7%
Easy

2839. Check if Strings Can be Made Equal With Operations I
47.3%
Easy

2840. Check if Strings Can be Made Equal With Operations II
55.9%
Med.

2842. Count K-Subsequences of a String With Maximum Beauty
29.5%
Hard

2844. Minimum Operations to Make a Special Number
38.1%
Med.

2851. String Transformation
30.1%
Hard

2864. Maximum Odd Binary Number
83.0%
Easy

2868. The Wording Game
53.4%
Hard

2896. Apply Operations to Make Two Strings Equal
27.1%
Med.

2900. Longest Unequal Adjacent Groups Subsequence I
60.6%
Easy

2901. Longest Unequal Adjacent Groups Subsequence II
27.2%
Med.

2904. Shortest and Lexicographically Smallest Beautiful String
39.4%
Med.

2911. Minimum Changes to Make K Semi-palindromes
35.2%
Hard

2914. Minimum Number of Changes to Make Binary String Beautiful
76.9%
Med.

2933. High-Access Employees
44.6%
Med.

2937. Make Three Strings Equal
43.5%
Easy

2938. Separate Black and White Balls
64.8%
Med.

2942. Find Words Containing Character
88.5%
Easy

2947. Count Beautiful Substrings I
61.0%
Med.

2949. Count Beautiful Substrings II
25.2%
Hard

2950. Number of Divisible Substrings
73.2%
Med.

2953. Count Complete Substrings
27.7%
Hard

2955. Number of Same-End Substrings
61.7%
Med.

2957. Remove Adjacent Almost-Equal Characters
52.0%
Med.

2976. Minimum Cost to Convert String I
58.1%
Med.

2977. Minimum Cost to Convert String II
25.5%
Hard

2981. Find Longest Special Substring That Occurs Thrice I
62.2%
Med.

2982. Find Longest Special Substring That Occurs Thrice II
38.4%
Med.

2983. Palindrome Rearrangement Queries
25.3%
Hard

2999. Count the Number of Powerful Integers
26.4%
Hard

3003. Maximize the Number of Partitions After Operations
27.0%
Hard

3006. Find Beautiful Indices in the Given Array I
37.2%
Med.

3008. Find Beautiful Indices in the Given Array II
25.4%
Hard

3014. Minimum Number of Pushes to Type Word I
66.2%
Easy

3016. Minimum Number of Pushes to Type Word II
80.3%
Med.

3019. Number of Changing Keys
80.1%
Easy

3029. Minimum Time to Revert Word to Initial State I
41.1%
Med.

3031. Minimum Time to Revert Word to Initial State II
34.8%
Hard

3035. Maximum Palindromes After Operations
42.6%
Med.

3042. Count Prefix and Suffix Pairs I
65.6%
Easy

3043. Find the Length of the Longest Common Prefix
56.2%
Med.

3045. Count Prefix and Suffix Pairs II
24.8%
Hard

3076. Shortest Uncommon Substring in an Array
46.5%
Med.

3078. Match Alphanumerical Pattern in Matrix I
64.8%
Med.

3081. Replace Question Marks in String to Minimize Its Value
27.5%
Med.

3083. Existence of a Substring in a String and Its Reverse
66.1%
Easy

3084. Count Substrings Starting and Ending with Given Character
48.5%
Med.

3085. Minimum Deletions to Make String K-Special
44.0%
Med.

3088. Make String Anti-palindrome
49.7%
Hard

3090. Maximum Length Substring With Two Occurrences
63.8%
Easy

3093. Longest Common Suffix Queries
38.0%
Hard

3104. Find Longest Self-Contained Substring
56.9%
Hard

3106. Lexicographically Smallest String After Operations With Constraint
63.2%
Med.

3110. Score of a String
92.4%
Easy

3114. Latest Time You Can Obtain After Replacing Characters
35.5%
Easy

3119. Maximum Number of Potholes That Can Be Fixed
55.1%
Med.

3120. Count the Number of Special Characters I
65.6%
Easy

3121. Count the Number of Special Characters II
41.6%
Med.

3125. Maximum Number That Makes Result of Bitwise AND Zero
69.0%
Med.

3135. Equalize Strings by Adding or Removing Characters at Ends
55.2%
Med.

3136. Valid Word
38.1%
Easy

3137. Minimum Number of Operations to Make Word K-Periodic
61.2%
Med.

3138. Minimum Length of Anagram Concatenation
41.5%
Med.

3143. Maximum Points Inside the Square
38.7%
Med.

3144. Minimum Substring Partition of Equal Character Frequency
40.0%
Med.

3146. Permutation Difference between Two Strings
87.9%
Easy

3163. String Compression III
68.1%
Med.

3167. Better Compression of String
74.4%
Med.

3168. Minimum Number of Chairs in a Waiting Room
80.0%
Easy

3170. Lexicographically Minimum String After Removing Stars
35.7%
Med.

3174. Clear Digits
73.1%
Easy

3210. Find the Encrypted String
68.4%
Easy

3211. Generate Binary Strings Without Adjacent Zeros
86.7%
Med.

3213. Construct String with Minimum Cost
19.7%
Hard

3216. Lexicographically Smallest String After a Swap
53.6%
Easy

3223. Minimum Length of String After Operations
54.6%
Med.

3227. Vowels Game in a String
62.6%
Med.

3228. Maximum Number of Operations to Move Ones to the End
53.8%
Med.

3234. Count the Number of Substrings With Dominant Ones
16.4%
Med.

3248. Snake in Matrix
82.6%
Easy

3258. Count Substrings That Satisfy K-Constraint I
80.2%
Easy

3260. Find the Largest Palindrome Divisible by K
15.0%
Hard

3261. Count Substrings That Satisfy K-Constraint II
21.9%
Hard

3271. Hash Divided String
84.6%
Med.

3274. Check if Two Chessboard Squares Have the Same Color
70.4%
Easy

3279. Maximum Total Area Occupied by Pistons
55.1%
Hard

3280. Convert Date to Binary
88.4%
Easy

3291. Minimum Number of Valid Strings to Form Target I
19.2%
Med.

3292. Minimum Number of Valid Strings to Form Target II
17.4%
Hard

3295. Report Spam Message
47.4%
Med.

3297. Count Substrings That Can Be Rearranged to Contain a String I
41.8%
Med.

3298. Count Substrings That Can Be Rearranged to Contain a String II
58.8%
Hard

3302. Find the Lexicographically Smallest Valid Sequence
19.8%
Med.

3303. Find the Occurrence of First Almost Equal Substring
12.3%
Hard

3305. Count of Substrings Containing Every Vowel and K Consonants I
40.5%
Med.

3306. Count of Substrings Containing Every Vowel and K Consonants II
21.6%
Med.

3316. Find Maximum Removals From Source String
37.7%
Med.

3320. Count The Number of Winning Sequences
31.9%
Hard

3324. Find the Sequence of Strings Appeared on the Screen
80.2%
Med.

3325. Count Substrings With K-Frequency Characters I
55.1%
Med.

3327. Check if DFS Strings Are Palindromes
19.6%
Hard

3329. Count Substrings With K-Frequency Characters II
76.3%
Hard

3330. Find the Original Typed String I
56.4%
Easy

3331. Find Subtree Sizes After Changes
58.2%
Med.

3333. Find the Original Typed String II
14.9%
Hard

3335. Total Characters in String After Transformations I
26.3%
Med.

3337. Total Characters in String After Transformations II
32.0%
Hard

3340. Check Balanced String
83.2%
Easy

3343. Count Number of Balanced Permutations
15.4%
Hard

3348. Smallest Divisible Digit Product II
9.0%
Hard

3352. Count K-Reducible Numbers Less Than N
27.6%
Hard

3361. Shift Distance Between Two Strings
53.3%
Med.

3365. Rearrange K Substrings to Form Target String
51.6%
Med.

3387. Maximize Amount After Two Days of Conversions
56.8%
Med.

3389. Minimum Operations to Make Character