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59 problems total

Array (174)Sorting (45)Depth First Search (44)Tree (41)Breadth First Search (35)Linked List (28)Stack (27)Recursion (18)Graph Theory (12)Monotonic Stack (8)Queue (6)Shortest Path (2)

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Title	Difficulty	Videos	Companies
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
Valid Parentheses	easy		adobe airbnb akuna-capital
Generate Parentheses	medium	-	adobe alibaba amazon
Find the Index of the First Occurrence in a String	easy	-	adobe amazon apple
Substring with Concatenation of All Words	hard	-	adobe amazon apple
Longest Valid Parentheses	hard	-	adobe amazon apple
Count and Say Sequence	medium	-	adobe amazon apple
Wildcard Matching	hard	-	adobe amazon bloomberg
Group Anagrams	medium		adobe affirm amazon
Valid Number	hard	-	adobe amazon apple
Add Binary Strings	easy	-	adobe amazon apple
Simplify Path	medium	-	adobe amazon bloomberg
Edit Distance	medium	-	adobe amazon apple
Minimum Window Substring	hard		adobe airbnb amazon
Word Search 1 - Find if word exists	medium		adobe amazon apple
Decode Ways	medium		adobe amazon apple
Restore IP Addresses	medium	-	adobe amazon apple
Distinct Subsequences	hard	-	adobe amazon barclays
Valid Palindrome	easy		adobe amazon apple
Palindrome Partitioning	medium		adobe amazon bloomberg
Word Break 1 - Check if word is breakable	medium		adobe amazon apple
Longest Substring with At Most Two Distinct Characters	medium	-	adobe amazon facebook
Excel Sheet Column Title	easy	-	adobe apple facebook
Isomorphic Strings	easy		adobe amazon bloomberg
Shortest Palindrome 1 - Prepending characters	hard	-	adobe amazon bloomberg
Basic Calculator 1	hard	-	adobe amazon bloomberg
Binary Tree Path - All root to leaf paths	easy	-	adobe amazon apple
Remove Duplicate Letters	medium	-	adobe amazon apple
Reverse String	easy		adobe amazon apple
First Unique Character in a String	easy	-	adobe amazon apple
Find the Difference	easy	-	adobe amazon google
Longest Substring with At Least K Repeating Characters	medium	-	adobe amazon baidu
Evaluate Division	medium	-	adobe amazon bloomberg
Remove K Digits	medium	-	adobe amazon bloomberg
Fizz Buzz	easy	-	adobe amazon apple
Add Strings	easy	-	adobe airbnb amazon
Strong Password Checker	hard	-	adobe amazon google
Encode and Decode TinyURL	medium	-	adobe amazon bloomberg
Palindromic Substrings	medium		adobe amazon apple
Next Closest Time	medium	-	adobe amazon bytedance
Repeated String Match	medium	-	adobe amazon facebook
Top K Frequent Words	medium	-	adobe amazon apple
To Lower Case	easy	-	adobe apple google
Number of Atoms	hard	-	adobe amazon bytedance

Showing 1 to 50 of 59 results