String Interview Questions
663 real interview questions test String. Practice any of them in the code editor and get AI feedback on your solution.
- Junior30% (202)
- Mid/Senior48% (317)
- Staff22% (144)
Companies that ask String the most
Questionspage 3 of 7
- Flip String to Monotone Increasing5 companiesMid/Senior
- Recover a Tree From Preorder Traversal5 companiesStaff
- Lexicographically Smallest Equivalent String5 companiesMid/Senior
- Letter Tile Possibilities5 companiesMid/Senior
- Shortest Common Supersequence5 companiesStaff
- Last Substring in Lexicographical Order5 companiesStaff
- Decrypt String from Alphabet to Integer Mapping5 companiesJunior
- Number of Days Between Two Dates5 companiesJunior
- Longest Happy Prefix5 companiesStaff
- String Matching in an Array5 companiesJunior
- The k-th Lexicographical String of All Happy Strings of Length n5 companiesMid/Senior
- Maximum Number of Vowels in a Substring of Given Length5 companiesMid/Senior
- Check If a String Contains All Binary Codes of Size K5 companiesMid/Senior
- Minimum Suffix Flips5 companiesMid/Senior
- String Compression II5 companiesStaff
- Find Kth Bit in Nth Binary String5 companiesMid/Senior
- Split a String Into the Max Number of Unique Substrings5 companiesMid/Senior
- Alert Using Same Key-Card Three or More Times in a One Hour Period5 companiesMid/Senior
- Check if One String Swap Can Make Strings Equal5 companiesJunior
- Sentence Similarity III5 companiesMid/Senior
- Longest Substring Of All Vowels in Order5 companiesMid/Senior
- Largest Color Value in a Directed Graph5 companiesStaff
- Substrings of Size Three with Distinct Characters5 companiesJunior
- Minimum Number of Flips to Make the Binary String Alternating5 companiesMid/Senior
- Unique Length-3 Palindromic Subsequences5 companiesMid/Senior
- Find Unique Binary String5 companiesMid/Senior
- Reverse Prefix of Word5 companiesJunior
- Adding Spaces to a String5 companiesMid/Senior
- Minimum Number of Moves to Make Palindrome5 companiesStaff
- Longest Path With Different Adjacent Characters5 companiesStaff
- Largest 3-Same-Digit Number in String5 companiesJunior
- Move Pieces to Obtain a String5 companiesMid/Senior
- Minimum Recolors to Get K Consecutive Black Blocks5 companiesJunior
- Time Needed to Rearrange a Binary String5 companiesMid/Senior
- Sort the People5 companiesJunior
- Split Message Based on Limit5 companiesStaff
- Maximum Number of Non-overlapping Palindrome Substrings5 companiesStaff
- Minimum Penalty for a Shop5 companiesMid/Senior
- Minimum String Length After Removing Substrings5 companiesJunior
- Separate Black and White Balls5 companiesMid/Senior
- Find Longest Special Substring That Occurs Thrice I5 companiesMid/Senior
- Count the Number of Powerful Integers5 companiesStaff
- Find Beautiful Indices in the Given Array I5 companiesMid/Senior
- Number of Changing Keys5 companiesJunior
- Score of a String5 companiesJunior
- Clear Digits5 companiesJunior
- Count the Number of Substrings With Dominant Ones5 companiesMid/Senior
- Find the Original Typed String II5 companiesStaff
- Find the Lexicographically Largest String From the Box I5 companiesMid/Senior
- Lexicographically Smallest Generated String5 companiesStaff
- Longest Absolute File Path4 companiesMid/Senior
- Reconstruct Original Digits from English4 companiesMid/Senior
- Keyboard Row4 companiesJunior
- Base 74 companiesJunior
- Detect Capital4 companiesJunior
- Delete Operation for Two Strings4 companiesMid/Senior
- Minimum Index Sum of Two Lists4 companiesJunior
- Stickers to Spell Word4 companiesStaff
- Minimum ASCII Delete Sum for Two Strings4 companiesMid/Senior
- Subdomain Visit Count4 companiesMid/Senior
- Shortest Distance to a Character4 companiesJunior
- Shifting Letters4 companiesMid/Senior
- Numbers At Most N Given Digit Set4 companiesStaff
- Unique Email Addresses4 companiesJunior
- Reorder Data in Log Files4 companiesMid/Senior
- Delete Columns to Make Sorted4 companiesJunior
- Smallest Subsequence of Distinct Characters4 companiesMid/Senior
- Split a String in Balanced Strings4 companiesJunior
- Minimum Swaps to Make Strings Equal4 companiesMid/Senior
- Maximum Score Words Formed by Letters4 companiesStaff
- Destination City4 companiesJunior
- Consecutive Characters4 companiesJunior
- Reformat Date4 companiesJunior
- Minimum Insertions to Balance a Parentheses String4 companiesMid/Senior
- Make The String Great4 companiesJunior
- Partitioning Into Minimum Number Of Deci-Binary Numbers4 companiesMid/Senior
- Longest Nice Substring4 companiesJunior
- Maximum Number of Words You Can Type4 companiesJunior
- Check if All Characters Have Equal Number of Occurrences4 companiesJunior
- Sum of Digits of String After Convert4 companiesJunior
- Maximize the Confusion of an Exam4 companiesMid/Senior
- Remove Colored Pieces if Both Neighbors are the Same Color4 companiesMid/Senior
- Minimum Number of Food Buckets to Feed the Hamsters4 companiesMid/Senior
- Maximum Number of Words Found in Sentences4 companiesJunior
- Counting Words With a Given Prefix4 companiesJunior
- Decode the Message4 companiesJunior
- Removing Stars From a String4 companiesMid/Senior
- Optimal Partition of String4 companiesMid/Senior
- Sum of Prefix Scores of Strings4 companiesStaff
- Remove Letter To Equalize Frequency4 companiesJunior
- Odd String Difference4 companiesJunior
- Words Within Two Edits of Dictionary4 companiesMid/Senior
- Count Pairs Of Similar Strings4 companiesJunior
- Shortest Distance to Target String in a Circular Array4 companiesJunior
- Take K of Each Character From Left and Right4 companiesMid/Senior
- Minimum Additions to Make Valid String4 companiesMid/Senior
- Lexicographically Smallest Palindrome4 companiesJunior
- Lexicographically Smallest String After Substring Operation4 companiesMid/Senior
- Sort Vowels in a String4 companiesMid/Senior
- Furthest Point From Origin4 companiesJunior