- Wifi Range
- Merge Strings Alternately
- Valid Palindrome
- Length of Last Word
- Removing Stars From a String
- Maximum Length
- Find the Longest Balanced Substring of a Binary String
- Add minimum characters
- Optimal Partition of String
- Minimum Steps Required
- Count the substrings
- Design Browser History
- Count the Number of Vowel Strings in Range
- Longest Common Substring
- Save Flowers
- Number of Valid Words in a Sentence
- Valid Compressed String
- Implement Atoi
- Reverse a String
- Multiply two strings
- Partition String Into Substrings With Values at Most K
- Find the Array Concatenation Value
- Minimum Days
- Balloon Everywhere
- Naming a Company
- Verifying an Alien Dictionary
- Greatest Common Divisor of Strings
- Minimum times A has to be repeated such that B is a substring of it
- Scrambled String
- Total Decoding Messages
- Concatenated Words
- Type it!
- Split The String
- Minimum Operations
- Geeks And The String
- Using a Robot to Print the Lexicographically Smallest String
- Remove Outermost Parentheses
- Apply Discount to Prices
- Invalid Transactions
- Flip String to Monotone Increasing
- Find the Index of the First Occurrence in a String
- Decode the Slanted Ciphertext
- Decode Ways
- Stamping The Sequence
- Sum of two large numbers
- Valid Anagram
- Ransom Note
- First Unique Character in a String
- Sum of all substrings of a number
- Shortest Common Supersequence
- Renaming Cities
- Largest number with given sum
- Rearrange characters
- Parenthesis Checker
- Split the binary string into substrings with equal number of 0s and 1s
- Permutations of a given string
- Parenthesis Checker
- Palindrome String
- Next Permutation
- Longest Repeating Subsequence
- Longest Palindrome in a String
- Edit Distance
- Count the Reversals
- Convert a sentence into its equivalent mobile numeric keypad sequence
- The Modified String
- Sum of numbers in string
- Smallest window in a string containing all the characters of another string
- Reverse words in a given string
- Repeating Character - First Appearance Leftmost
- Remove common characters and concatenate
- Rabin Karp - Pattern Searching
- Pattern Search KMP
- Pangram Checking
- Nth number made of prime digits
- Non Repeating Character
- Minimum indexed character
- Maximum Occuring Character
- Lexicographic Rank Of A String
- Keypad typing
- Isomorphic Strings
- Implement strstr
- Check if string is rotated by two places
- Check if strings are rotations of each other or not
- Check if a String is Subsequence of Other
- Check if a string is Isogram or not
- Case-specific Sorting of Strings
- Binary String
- Anagram
- Pattern Search
- Naive Pattern Search
- Winner of an election
- Possible Words From Phone Digits
- Score of Parentheses
- Valid Parentheses
- Design Add and Search Words Data Structure
- Detect Capital
- Add Binary
- Robot Bounded In Circle
- Basic Calculator II
- Decode String
- Maximum Repeating Substring
- Consecutive Characters
- Word Break
- Minimum Number of Operations to Move All Balls to Each Box
- Stream of Characters
- Lexicographically Smallest String After Applying Operations
- Uncommon Words from Two Sentences
- Bulls and Cows
- Iterator for Combination
- Word Pattern
- Isomorphic Strings
- Find the Difference
- String Compression
- Count and Say
- Multiply Strings
- Longest Common Prefix
- Longest Common Subsequence
- Edit Distance
- Delete Operation for Two Strings
- Plates Between Candles
- Longest Duplicate Substring
- Kth Distinct String in an Array
- Roman to Integer
- Integer to Roman
- ZigZag Conversion
- Sort Colors
- Letter Combinations of a Phone Number
- Sort Characters By Frequency
- Find All Anagrams in a String
- Backspace String Compare
- Reverse Words in a String
- Interval List Intersections
- Container With Most Water
- Palindrome Number
- Check if Numbers Are Ascending in a Sentence
- String to Integer (atoi)
- Remove Colored Pieces if Both Neighbors are the Same Color
- Letter Case Permutation
- Permutation in String
- Word Search II
- Longest Substring Without Repeating Characters
- Reverse Words in a String III