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TitleDifficultyVideosCompanies
Balance Parentheses with Minimum Insertions and Deletionshard-
facebook
Check if a graph is minimally-connectedmedium-
facebook
Conditional selection between x and y with bitwise operationsmedium-
facebook
Design a Sparse Arrayeasy-
facebook
Determining the Existence of a Valid Secret Code in Mastermind Based on Given Guesses and Scores Guesses and Scoresmedium-
facebook
Find if there is a path between two vertices in a directed grapheasy-
googlefacebookamazon
Find the Index of the First Occurrence in a Stringeasy-
adobeamazonapple
Divide Two Integersmedium-
adobeamazonapple
Fisher-Yates Shufflemedium-
facebook
Flatten a Multi-Level Linked List level by levelmedium-
facebook
Implement Elo Rating Systemmedium-
facebook
Two Sumeasy
adobeaetionaffirm
Add Two Numbers represented as Linked List in Reversed Ordermedium-
adobeaetionairbnb
Longest Substring Without Repeating Charactersmedium
adobealationalibaba
Median of Two Sorted Arrayshard-
adobeairbnbalibaba
Longest Palindromic Substringmedium
adobeairbnbalibaba
Reverse Integermedium-
adobeamazonapple
Convert String to Integer atoimedium-
adobeamazonapple
Palindrome Numbereasy
adobeamazonapple
Regular Expression Matchinghard-
adobeairbnbalibaba
Container With Most Watermedium
adobeamazonapple
Integer To Romanmedium-
adobeamazonapple
Roman To Integereasy
adobeamazonapple
Longest Common Prefix in array of stringeasy-
adobealibabaamazon
3Sum0 - Find three elements in an array that sum to a zeromedium
adobeakuna-capitalalibaba
3Sum - Closestmedium-
adobeamazonapple
Letter Combinations of a Phone Numbermedium-
amazonappleatlassian
4Summedium-
adobeamazonapple
Remove Nth Node From End of Listmedium
adobeamazonapple
Valid Parentheseseasy
adobeairbnbakuna-capital
Merge Two Sorted Linked Listseasy
adobeairbnbalibaba
Generate Parenthesesmedium-
adobealibabaamazon
Largest String With Swapsmedium-
facebook
Merge K Sorted Listshard
adobeairbnbalibaba
Minimum and Maximum in an array with Optimal Comparisonsmedium-
facebook
Next Bigger Integer with Same Number of 1-Bitsmedium-
facebook
Number of Overlapping Lines between points on 2 parallel lineseasy-
amazonfacebook
Number of Ways to Rearrange Sticks With K Sticks Visiblehard-
facebook
Qux Color Transformationmedium-
facebook
Rearranging Array Elements by Index Mappingmedium-
facebook
Reservoir Sampling Explainedmedium-
facebook
Rotate an Array to Leftmedium-
facebook
Swap Nodes in Pairsmedium-
adobeamazonapple
K Reverse a linked listhard-
adobeamazonapple
Remove duplicates from Sorted Array 1easy
adobeamazonapple
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
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