String

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# Title Acceptance Difficulty
730 Count Different Palindromic Subsequences 27.0% Hard
722 Remove Comments 25.8% Medium
696 Count Binary Substrings 51.8% Easy
686 Repeated String Match 32.9% Easy
681 Next Closest Time 42.9% Medium
680 Valid Palindrome II 32.2% Easy
678 Valid Parenthesis String 28.8% Medium
657 Judge Route Circle 68.6% Easy
647 Palindromic Substrings 55.7% Medium
635 Design Log Storage System 48.8% Medium
632 Smallest Range 42.0% Hard
616 Add Bold Tag in String 38.7% Medium
609 Find Duplicate File in System 52.4% Medium
606 Construct String from Binary Tree 49.7% Easy
591 Tag Validator 30.1% Hard
583 Delete Operation for Two Strings 44.2% Medium
564 Find the Closest Palindrome 17.4% Hard
557 Reverse Words in a String III 59.8% Easy
556 Next Greater Element III 28.9% Medium
555 Split Concatenated Strings 37.2% Medium
553 Optimal Division 55.2% Medium
551 Student Attendance Record I 44.2% Easy
544 Output Contest Matches 70.9% Medium
541 Reverse String II 43.7% Easy
539 Minimum Time Difference 45.9% Medium
537 Complex Number Multiplication 64.0% Medium
536 Construct Binary Tree from String 42.8% Medium
527 Word Abbreviation 41.9% Hard
522 Longest Uncommon Subsequence II 31.8% Medium
521 Longest Uncommon Subsequence I 55.9% Easy
520 Detect Capital 51.9% Easy
468 Validate IP Address 20.7% Medium
459 Repeated Substring Pattern 38.2% Easy
443 String Compression 37.1% Easy
434 Number of Segments in a String 36.7% Easy
408 Valid Word Abbreviation 28.2% Easy
385 Mini Parser 30.7% Medium
383 Ransom Note 47.5% Easy
345 Reverse Vowels of a String 38.7% Easy
344 Reverse String 59.6% Easy
340 Longest Substring with At Most K Distinct Characters 39.2% Hard
336 Palindrome Pairs 26.6% Hard
293 Flip Game 56.5% Easy
273 Integer to English Words 22.4% Hard
271 Encode and Decode Strings 26.2% Medium
249 Group Shifted Strings 42.7% Medium
227 Basic Calculator II 29.6% Medium
214 Shortest Palindrome 24.7% Hard
186 Reverse Words in a String II 27.7% Medium
165 Compare Version Numbers 20.4% Medium
161 One Edit Distance 31.6% Medium
159 Longest Substring with At Most Two Distinct Characters 41.9% Hard
158 Read N Characters Given Read4 II - Call multiple times 24.6% Hard
157 Read N Characters Given Read4 29.2% Easy
151 Reverse Words in a String 15.7% Medium
126 Word Ladder II 14.5% Hard
125 Valid Palindrome 26.6% Easy
115 Distinct Subsequences 31.9% Hard
97 Interleaving String 24.9% Hard
93 Restore IP Addresses 27.9% Medium
91 Decode Ways 20.0% Medium
87 Scramble String 29.4% Hard
76 Minimum Window Substring 26.1% Hard
72 Edit Distance 32.1% Hard
71 Simplify Path 25.8% Medium
68 Text Justification 19.6% Hard
67 Add Binary 33.2% Easy
65 Valid Number 12.8% Hard
58 Length of Last Word 32.0% Easy
49 Group Anagrams 36.4% Medium
44 Wildcard Matching 20.6% Hard
43 Multiply Strings 27.6% Medium
38 Count and Say 35.7% Easy
32 Longest Valid Parentheses 23.2% Hard
30 Substring with Concatenation of All Words 22.1% Hard
28 Implement strStr() 28.6% Easy
22 Generate Parentheses 46.3% Medium
20 Valid Parentheses 33.7% Easy
17 Letter Combinations of a Phone Number 35.4% Medium
14 Longest Common Prefix 31.5% Easy
13 Roman to Integer 46.8% Easy
12 Integer to Roman 45.5% Medium
10 Regular Expression Matching 24.3% Hard
8 String to Integer (atoi) 13.9% Medium
6 ZigZag Conversion 27.0% Medium
5 Longest Palindromic Substring 25.3% Medium
3 Longest Substring Without Repeating Characters 24.5% Medium