All Problems

79 problems total

Array (1905)Sorting (440)Depth First Search (316)Database (301)Breadth First Search (241)Tree (240)Stack (172)Graph Theory (169)Linked List (81)Monotonic Stack (67)Queue (50)Recursion (48)Shortest Path (33)
All Topics(4301)Algorithms(3944)Database(305)Networking(0)Object Oriented Design(31)Programming Languages(5)System Design(0)

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TitleDifficultyVideosCompanies
Aho-Corasick Algorithm for Multi-Pattern String Searchhard-
Autocomplete Suggestion Systemmedium-
twitter
Can Make Palindrome from Substringmedium-
Hotel Reviewsmedium-
booking
Longest Common Prefix in array of stringeasy-
adobealibabaamazon
Longest Common Prefix of K Strings After Removalhard-
Map-based Trie Implementationmedium-
Maximum Number of Matching Indices After Right Shiftseasy-
Phone Number Prefixeasy-
Shortest Unique Prefixmedium-
googlesquare
Word Break 1 - Check if word is breakablemedium
adobeamazonapple
Word Break 2 - Construct a sentencehard
amazonappleaudible
Implement Triemedium
amazonapplebloomberg
Design Add and Search Words Data Structuremedium
airbnbamazonapple
Word Search 2 - Return All Wordshard
airbnbamazonapple
Palindrome Pairshard-
airbnbamazonapple
Lexicographical Numbersmedium
adobebloombergbytedance
Maximum XOR of Two Numbers in an Arraymedium-
amazongoogle
Word Squareshard-
googleoracle
K-th Smallest in Lexicographical Orderhard-
bytedancegooglehulu
Concatenated Wordshard-
amazonappleaudible
Word Abbreviationhard-
googlegrabsnapchat
Design In-Memory File Systemhard-
airbnbamazonbaidu
Add Bold Tag in Stringmedium-
facebookgooglewish
Design Search Autocomplete Systemhard-
amazonapplebloomberg
Replace Wordsmedium-
uber
Implement Magic Dictionarymedium-
facebookgooglemicrosoft
Map Sum Pairsmedium-
akuna-capital
Top K Frequent Wordsmedium-
adobeamazonapple
Longest Word in Dictionarymedium-
amazongoldman-sachsgoogle
Prefix and Suffix Searchhard-
facebookgoogle
Number of Matching Subsequencesmedium-
amazonfacebookgoogle
Short Encoding of Wordsmedium-
Camelcase Matchingmedium-
amazongoogle
Two City Schedulingmedium-
amazonbloombergfacebook
Stream of Charactershard-
amazonfacebookgoogle
Lexicographically Smallest Equivalent Stringmedium-
Index Pairs of a Stringeasy-
amazon
As Far from Land as Possiblemedium-
amazonuipath
Design File Systemmedium-
airbnbamazon
Number of Valid Words for Each Puzzlehard-
dropbox
Remove Sub-Folders from the Filesystemmedium
amazonfacebookgoogle
Search Suggestions Systemmedium-
amazon
Matrix Block Summedium-
google
Distinct Echo Substringshard-
google
Checking Existence of Edge Length Limited Pathshard-
Number of Distinct Substrings in a Stringmedium-
Where Will the Ball Fallmedium-
Maximum XOR With an Element From Arrayhard-
Maximum Value at a Given Index in a Bounded Arraymedium-
Showing 1 to 50 of 79 results
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