TitleDifficultyCompaniesVideos
Find frequency of a word in a book
Evaluation function for Tic-Tac-ToeEasyamazon apple facebook zoho
Find missing integer in an array with only access to jth bit of elements
Floyd-Warshall AlgorithmMedium
Integer To Roman ProblemMediumadobe amazon apple blackrock bloomberg evernote facebook google linkedin microsoft opendoor oracle paypal salesforce twitter yahoo
Roman To Integer ProblemEasyadobe amazon apple bloomberg facebook goldman-sachs google linkedin microsoft oracle qualtrics uber yahoo zillow
String Compression 2 ProblemHard
String Compression ProblemMediumakuna-capital amazon apple bloomberg ebay expedia facebook godaddy goldman-sachs google lyft microsoft redfin snapchat spotify wayfair yandex yelp zillow
Remove Nth Node From End of ListMediumadobe amazon apple bloomberg bytedance cisco facebook goldman-sachs google microsoft oracle vmware yandex
Satisfiability of Equality Equations ProblemMediumsumologic
Valid Anagram ProblemEasyamazon apple bloomberg cisco docusign expedia facebook goldman-sachs google microsoft morgan-stanley oracle paypal servicenow snapchat uber yahoo yelp zulily
Letter Combinations of a Phone Number ProblemMediumamazon apple atlassian bloomberg cisco dropbox ebay facebook goldman-sachs google jpmorgan lyft microsoft morgan-stanley nutanix oracle quip roblox salesforce servicenow square twilio uber vmware yahoo yelp
4SumMediumadobe amazon apple bloomberg facebook google microsoft samsung yahoo
Regular Expression Matching ProblemHardadobe airbnb alibaba amazon apple bloomberg bytedance coursera databricks ebay facebook flipkart google houzz lyft microsoft oracle palantir-technologies pocket-gems twitter uber zulily
Wildcard Matching ProblemHardadobe amazon bloomberg bytedance coursera cruise-automation facebook goldman-sachs google microsoft oracle snapchat twitter two-sigma
Add Two Numbers represented as Linked List in Reversed OrderMediumadobe aetion airbnb alibaba amazon apple baidu bloomberg bytedance capital-one cisco dell docusign ebay facebook flipkart google grab huawei ibm intel lyft mathworks microsoft nvidia oracle paypal qualcomm redfin salesforce servicenow uber vmware wish yahoo yandex zoho
Capitalize the first character of each word in a given text
Sum of Even Numbers After QueriesMediumindeed
UTF-8 ValidationMediumamazon apple facebook google palantir-technologies
Maximum Height by Stacking Cuboids ProblemHard
Construct String from Binary Tree ProblemMediumamazon
Manachar’s Algorithm - Longest palindromic substring in linear timeHard
Reordered Power of 2 ProblemMedium
Max Number of K-Sum PairsMedium
Two Sum 4 - Input is Binary Search TreeEasyamazon facebook microsoft samsung servicenow snapchat google
Number of Arithmetic TripletsEasy
2Sum - 0 - closest - Find two elements whose sum is closest to zero
Binary Search Tree BST Inorder IteratorMediumalibaba amazon apple atlassian bloomberg bytedance cisco cloudera ebay facebook google linkedin microsoft oracle qualtrics redfin splunk uber
Two Sum 3 - Data structure designEasylinkedin
Number of Subsequences That Satisfy the Given Sum ConditionMediumfacebook google
Ransom Note ProblemEasyamazon apple microsoft spotify uber
Word Pattern 2 ProblemMediumdropbox facebook pony-ai ponyai uber
Shift 2D GridEasyamazon facebook
Next Greater Element 1Easyamazon bloomberg facebook google microsoft oracle twitter
Baseball Game ProblemEasyamazon google
Morris Traversal
Guess Number Higher or LowerEasyapple google microsoft
Avoid Overflow when calculating Mid in Binary Search
Find All Numbers Disappeared in an ArrayEasyadobe apple bloomberg google microsoft yahoo
Maximum Number of Balloons ProblemEasytesla wayfair
Single Number 3 - All elements except two occur twiceMediumamazon apple facebook yahoo
Find Pivot IndexEasyamazon apple bloomberg citadel coupang expedia facebook godaddy goldman-sachs google indeed microsoft radius salesforce tesla
Path Sum ProblemEasyadobe amazon apple bloomberg facebook microsoft oracle zillow
Power of Four ProblemEasytwo-sigma
Explain (n & (n-1)) == 0
Power of Two ProblemEasyamazon apple google microsoft nvidia
x&(x-1) Explained
Calculate Rolling Hashcode for String
Optimized Brute Force String Search Algorithm
Naive Brute Force String Search Algorithm