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Companies
Microsoft
String
String
0/108 solved
Longest Substring Without Repeating Characters
MEDIUM
Longest Palindromic Substring
MEDIUM
Valid Parentheses
EASY
Generate Parentheses
MEDIUM
Group Anagrams
MEDIUM
Letter Combinations of a Phone Number
MEDIUM
Longest Common Prefix
EASY
Minimum Window Substring
HARD
Word Break
MEDIUM
Word Search
MEDIUM
Edit Distance
MEDIUM
Roman to Integer
EASY
Longest Common Subsequence
MEDIUM
Longest Valid Parentheses
HARD
Valid Anagram
EASY
Find All Anagrams in a String
MEDIUM
Regular Expression Matching
HARD
Word Ladder
HARD
Decode Ways
MEDIUM
Permutation in String
MEDIUM
Implement Trie (Prefix Tree)
MEDIUM
Palindromic Substrings
MEDIUM
Serialize and Deserialize Binary Tree
HARD
Valid Palindrome
EASY
Remove K Digits
MEDIUM
Add Binary
EASY
Word Search II
HARD
Evaluate Division
MEDIUM
First Unique Character in a String
EASY
Largest Number
MEDIUM
Reverse Words in a String
MEDIUM
Reverse String
EASY
Reorganize String
MEDIUM
Wildcard Matching
HARD
Valid Palindrome II
EASY
Interleaving String
MEDIUM
Zigzag Conversion
MEDIUM
Top K Frequent Words
MEDIUM
Integer to Roman
MEDIUM
Word Break II
HARD
Multiply Strings
MEDIUM
Accounts Merge
MEDIUM
Remove All Adjacent Duplicates In String
EASY
Basic Calculator
HARD
Find the Index of the First Occurrence in a String
EASY
Basic Calculator II
MEDIUM
Word Ladder II
HARD
Different Ways to Add Parentheses
MEDIUM
Remove All Adjacent Duplicates in String II
MEDIUM
Simplify Path
MEDIUM
Excel Sheet Column Title
EASY
Length of Last Word
EASY
String Compression
MEDIUM
Restore IP Addresses
MEDIUM
Ransom Note
EASY
Add Strings
EASY
Shortest Common Supersequence
HARD
Minimum Deletions to Make Character Frequencies Unique
MEDIUM
String to Integer (atoi)
MEDIUM
Time Based Key-Value Store
MEDIUM
Alien Dictionary
HARD
Maximum Length of a Concatenated String with Unique Characters
MEDIUM
Shortest Palindrome
HARD
Rotate String
EASY
Count and Say
MEDIUM
Find and Replace Pattern
MEDIUM
Text Justification
HARD
Integer to English Words
HARD
Serialize and Deserialize BST
MEDIUM
Number of Substrings Containing All Three Characters
MEDIUM
Fizz Buzz
EASY
Longest Substring with At Most K Distinct Characters
MEDIUM
Minimum Number of Steps to Make Two Strings Anagram
MEDIUM
Compare Version Numbers
MEDIUM
Letter Tile Possibilities
MEDIUM
Find the Longest Substring Containing Vowels in Even Counts
MEDIUM
Count Unique Characters of All Substrings of a Given String
HARD
Design Search Autocomplete System
HARD
Minimum Deletions to Make String Balanced
MEDIUM
Encode and Decode TinyURL
MEDIUM
Substring with Concatenation of All Words
HARD
Number of Atoms
HARD
Consecutive Characters
EASY
Maximum Number of Balloons
EASY
Design In-Memory File System
HARD
Encode and Decode Strings
MEDIUM
Longest Nice Substring
EASY
Shortest Word Distance
EASY
Find the Closest Palindrome
HARD
Count Substrings That Differ by One Character
MEDIUM
Reverse Words in a String II
MEDIUM
Palindrome Permutation
EASY
Serialize and Deserialize N-ary Tree
HARD
Validate IP Address
MEDIUM
The k-th Lexicographical String of All Happy Strings of Length n
MEDIUM
Rearrange String k Distance Apart
HARD
Strong Password Checker
HARD
Palindrome Permutation II
MEDIUM
Number of Ways to Split a String
MEDIUM
Largest Time for Given Digits
MEDIUM
Remove Comments
MEDIUM
Strobogrammatic Number
EASY
Replace All ?'s to Avoid Consecutive Repeating Characters
EASY
Generate a String With Characters That Have Odd Counts
EASY
Making File Names Unique
MEDIUM
Tag Validator
HARD
Minimize Rounding Error to Meet Target
MEDIUM
Equal Rational Numbers
HARD