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  1. Ultimate DSA Sheet
  3. String Basics
String Basics
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Reverse String
Valid Palindrome
Length of Last Word
Find the Index of the First Occurrence in a String
Longest Substring Without Repeating Characters
String to Integer (atoi)
Valid Parentheses
Reverse Words in a String
Reverse Vowels of a String
String Rotated by 2 Places
Minimum Window Substring
Longest Palindromic Substring
Group Anagrams
Permutation in String
Regular Expression Matching
Word Break
Wildcard Matching
Longest Valid Parentheses
Substring with Concatenation of All Words
Check if Two Strings are a Rotation of Each Other
Remove Duplicates from String
Minimum Characters to Be Added to Make String Palindrome
Minimum Number of Deletions to Make a String Palindrome
Print All Permutations of a String
Compare Version Numbers
Roman to Integer
Integer to Roman
Valid Number
Encode and Decode Strings
Find the Closest Palindrome
Text Justification
Word Ladder
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