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Jan 2020
3 Longest Substring Without Repeating Characters
Sep 2020
5 Longest Palindromic Substring
Feb 2023
14 Longest Common Prefix
Aug 2022
17 Letter Combinations of a Phone Number
Mar 2023
28 Find the Index of the First Occurrence in a String
Aug 2022
49 Group Anagrams
Jan 2023
68 Text Justification
Aug 2022
76 Minimum Window Substring
Aug 2022
127 Word Ladder
Sep 2022
131 Palindrome Partitioning
May 2023
151 Reverse Words in a String
Dec 2020
242 Valid Anagram
Sep 2022
269 Alien Dictionary
Oct 2021
383 Ransom Note
Dec 2020
387 First Unique Character in a String
Jan 2023
418 Sentence Screen Fitting
Sep 2022
443 String Compression
Sep 2021
557 Reverse Words in a String III
Sep 2022
680 Valid Palindrome II
Sep 2022
696 Count Binary Substrings
Sep 2022
767 Reorganize String
Aug 2022
828 Count Unique Characters of All Substrings of a Given String
Sep 2022
926 Flip String to Monotone Increasing
Jan 2023
1048 Longest String Chain
Feb 2023
1055 Shortest Way to Form String
Sep 2022
1209 Remove All Adjacent Duplicates in String II
Aug 2022
1268 Search Suggestions System
Sep 2022
1358 Number of Substrings Containing All Three Characters
Feb 2023
1525 Number of Good Ways to Split a String
Feb 2023
1592 Rearrange Spaces Between Words
Feb 2023
1657 Determine if Two Strings Are Close
Sep 2022
1698 Number of Distinct Substrings in a String
May 2023
1768 Merge Strings Alternately
Nov 2022
1790 Check if One String Swap Can Make Strings Equal
Sep 2022
2055 Plates Between Candles
Feb 2023
2185 Counting Words With a Given Prefix
Sep 2022
2222 Number of Ways to Select Buildings