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962 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)Database(305)Networking(0)Object Oriented Design(31)Programming Languages(5)System Design(0)Algorithms(3944)

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Title	Difficulty	Videos	Companies
Aho-Corasick Algorithm for Multi-Pattern String Search	hard	-
Amount of New Area Painted Each Day	hard	-
Apply Substitutions	medium	-
Boyer-Moore String Searching	medium	-
Brace Expansion	medium	-
Calculate Score After Performing Instructions	medium	-
Can Make Palindrome from Substring	medium	-
Check If a String Contains All Binary Codes of Size K	medium	-
Check if a string contains an anagram of another string	medium	-
Check If Digits Are Equal in String After Operations I	easy	-
Check If Digits Are Equal in String After Operations II	hard	-
Check if given string is palindrome or not	easy
Construct K Palindrome Strings	medium		uber
Count Cells in Overlapping Horizontal and Vertical Substrings	medium	-
Count Numbers with Non-Decreasing Digits	hard	-
Count Substrings Divisible By Last Digit	hard	-
Design Spreadsheet	medium	-
Design Underground System	medium	-
Determine if a string has all unique characters	medium	-
Edit Distance - Insert, Delete, no replace	medium	-
Find Mirror Score of a String	medium	-
Find Most Frequent Vowel and Consonant	easy	-
Find Special Substring of Length K	easy	-
Find the Index of the First Occurrence in a String	easy	-	adobe amazon apple
Find the Lexicographically Largest String From the Box II	hard	-
Find the Most Common Response	medium	-
Find Unique Binary String	medium
Find Valid Pair of Adjacent Digits in String	easy	-
First Duplicate Character in a String	easy	-
Frequencies of Shortest Supersequences	hard	-
Generate All Strings of n bits	medium	-
Hotel Reviews	medium	-	booking
Increasing Decreasing String	easy	-
Jaro-Winkler Algorithm for String Similarity	medium	-
Knuth Morris Pratt KMP Algorithm	medium	-
Longest Substring Without Repeating Characters	medium		adobe alation alibaba
Longest Palindromic Substring	medium		adobe airbnb alibaba
Convert String to Integer atoi	medium	-	adobe amazon apple
Regular Expression Matching	hard	-	adobe airbnb alibaba
Integer To Roman	medium	-	adobe amazon apple
Roman To Integer	easy		adobe amazon apple
Longest Common Prefix in array of string	easy	-	adobe alibaba amazon
Letter Combinations of a Phone Number	medium	-	amazon apple atlassian
Valid Parentheses	easy		adobe airbnb akuna-capital
Generate Parentheses	medium	-	adobe alibaba amazon
Largest String With Swaps	medium	-	facebook
Last Duplicate Character in a String	easy	-
Last Unique Character in a String	easy	-
Letter Tile Possibilities	medium		google microsoft
Lexicographically Smallest Generated String	hard	-

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