Practice of Algorithm Problems

String

3. Longest Substring Without Repeating Characters 6. ZigZag Conversion 12. Integer to Roman 13. Roman to Integer 14. Longest Common Prefix 20. Valid Parentheses 28. Implement strStr()30. Substring with Concatenation of All Words 38. Count and Say 43. Multiply Strings 49. Group Anagrams 53. Maximum Subarray 66. Plus One 67. Add Binary 68. Text Justification 76. Minimum Window Substring 87. Scramble String 125. Valid Palindrome 151. Reverse Words in a String 157. Read N Characters Given Read4 159. Longest Substring with At Most Two Distinct Characters 161. One Edit Distance 165. Compare Version Numbers 179. Largest Number 186. Reverse Words in a String II 214. Shortest Palindrome 242. Valid Anagram 249. Group Shifted Strings 266. Palindrome Permutation 271. Encode and Decode Strings 273. Integer to English Words 288. Unique Word Abbreviation 290. Word Pattern 291. Word Pattern II 293. Flip Game 336. Palindrome Pairs 340. Longest Substring with At Most K Distinct Characters 344. Reverse String 345. Reverse Vowels of a String 383. Ransom Note 387. First Unique Character in a String 392. Is Subsequence 395. Longest Substring with At Least K Repeating Characters 409. Longest Palindrome 415. Add Strings 424. Longest Repeating Character Replacement 438. Find All Anagrams in a String 443. String Compression 451. Sort Characters By Frequency 459. Repeated Substring Pattern 482. License Key Formatting 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 567. Permutation in String 609. Find Duplicate File in System 648. Replace Words 657. Robot Return to Origin 686. Repeated String Match 696. Count Binary Substrings 722. Remove Comments 734. Sentence Similarity 745. Prefix and Suffix Search 771. Jewels and Stones 777. Swap Adjacent in LR String 792. Number of Matching Subsequences 796. Rotate String 809. Expressive Words 811. Subdomain Visit Count 819. Most Common Word 843. Guess the Word 844. Backspace String Compare 917. Reverse Only Letters 929. Unique Email Addresses 937. Reorder Log Files 953. Verifying an Alien Dictionary 1003. Check If Word Is Valid After Substitutions 1096. Brace Expansion II 1108. Defanging an IP Address 1119. Remove Vowels from a String 1170. Compare Strings by Frequency of the Smallest Character 1189. Maximum Number of Balloons 1268. Search Suggestions System

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