README.md

Strings

String manipulation, pattern matching, and string algorithms.

Key Concepts Covered

• String traversal and manipulation
• String reversal
• Palindrome checking
• Character manipulation (uppercase/lowercase)
• ASCII operations
• Trie data structure
• Longest common subsequence

Problems in this Directory

String Manipulation

• reverseWords - Reverse words in a string
• to_Lower - Convert string to lowercase
• to_upper - Convert string to uppercase
• stringtoAscii - Convert string to ASCII values

Palindrome Problems

• stringPalindrome - Check if string is palindrome

Character Problems

• DoubleCharacterTrouble - Remove adjacent duplicate characters
• Interview_duplicatecharacterinstring - Find duplicate characters

Subsequence Problems

• LongestSubSeqString - Longest common subsequence

Trie Applications

• spellingChecker_trie - Spelling checker using trie

Miscellaneous

• strings_ - General string operations

Tips

• Master two-pointer technique for string problems
• Use StringBuilder/stringstream for concatenations
• Remember ASCII values: 'A'=65, 'a'=97, '0'=48
• Practice in-place string manipulation
• Understand string hashing for pattern matching