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4301 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)
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TitleDifficultyVideosCompanies
K Reverse a linked listhard-
adobeamazonapple
Remove duplicates from Sorted Array 1easy
adobeamazonapple
Remove Elementeasy
amazonbloomberggoogle
Substring with Concatenation of All Wordshard-
adobeamazonapple
Next Permutationmedium-
adobeamazonapple
Longest Valid Parentheseshard-
adobeamazonapple
Search in Rotated Sorted Arraymedium
adobealibabaamazon
Find first and last positions of target element in sorted arraymedium-
airbnbamazonapple
Search Insert Position in sorted arrayeasy-
adobeamazonapple
Valid Sudokumedium-
adobeamazonapple
Sudoku Solverhard-
adobeamazonapple
Count and Say Sequencemedium-
adobeamazonapple
Combination Sum 1medium
airbnbakuna-capitalamazon
Combination Sum 2 - Cant Reuse same elementmedium-
adobeamazonapple
First Missing Positivehard-
adobeamazonapple
Trapping Rain Waterhard-
adobeaffirmairbnb
Multiply Stringsmedium-
amazonappleexpedia
Rotate n x n matrix by 90 degreesmedium
adobeakuna-capitalamazon
Wildcard Matchinghard-
adobeamazonbloomberg
Jump Game 2 - Get min jumpsmedium-
adobeamazonapple
Permutations of Array 1medium-
adobeamazonapple
Permutations of Array 2 - Array has duplicatesmedium-
adobeamazonapple
Group Anagramsmedium
adobeaffirmamazon
Implement Power Function 1medium-
adobeamazonapple
N-Queenshard-
adobeamazonapple
N-Queens 2 - Count number of distinct solutionshard-
amazonzenefits
Maximum Subarray Summedium
adobealibabaamazon
Spiral Matrix 1 - Returnmedium
adobeamazonapple
Jump Game 1 - Check if it reaches last indexmedium
adobeamazonapple
Merge Overlapping Intervalsmedium
adobealibabaamazon
Insert Intervalmedium
adobeamazonapple
Length of Last Wordeasy
amazon
Spiral Matrix 2 - Generatemedium
adobeamazonapple
Kth Permutation Sequence of Numbers 1 to Nhard-
amazonapplefacebook
Rotate Linked List to Rightmedium-
adobeairbnbamazon
Subtract using plus operator onlyeasy-
Subtractive Euclidean Algorithm to find GCD of two numbersmedium-
Subtree Inversion Sumhard-
Sum of all subarraysmedium-
Sum of Good Numberseasy-
Sum of k smallest elements in BSTmedium-
Sum of K Subarrays With Length at Least Mmedium-
Sum of Pairwise Hamming Distancesmedium-
google
Sum of two numbers using only bitwise operatorsmedium
Sum of Variable Length Subarrayseasy-
Swap alternate nodes in a singly linked listmedium-
Swap bits at position i and jeasy-
Swap Every Kth Node in a LinkedListmedium-
Swap Nibbles in a Byteeasy-
Swap odd and even bits in an integermedium-
cisco
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