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TitleDifficultyCompaniesVideos
Power of FourEasytwo-sigma
Explain (n & (n-1)) == 0
Power of TwoEasyamazon apple google microsoft nvidia
x&(x-1) Explained
Calculate Rolling Hashcode for String
Optimized Brute Force String Search AlgorithmMedium
Naive Brute Force String Search AlgorithmMedium
Can Place FlowersEasyamazon cisco facebook google linkedin yahoo
Remove duplicates from Sorted List 2Mediumadobe amazon apple bloomberg google microsoft paypal salesforce
Isomorphic StringsEasyadobe amazon bloomberg facebook google linkedin microsoft oracle salesforce yahoo yelp
Kth Largest Element in a StreamEasyadobe amazon apple bloomberg ebay facebook google microsoft nutanix
Number of 1 BitsEasyadobe amazon apple box cisco facebook google microsoft qualcomm
Valid Palindrome 2Easyatlassian facebook google microsoft yahoo
Min Cost Climbing StairsEasyamazon bloomberg google yahoo
Unique Email AddressesEasyadobe amazon facebook google microsoft
Length of Last WordEasyamazon
Search Insert Position in sorted arrayEasyadobe amazon apple bloomberg google microsoft sap
Remove Linked List ElementsEasyadobe amazon apple bloomberg capital-one facebook google microsoft paypal pure-storage uber
Min StackMediumadobe amazon apple bloomberg ebay facebook flipkart goldman-sachs google groupon intuit linkedin lyft microsoft morgan-stanley netflix oracle pure-storage servicenow snapchat uber visa wish zenefits
Happy NumberEasyadobe airbnb amazon apple bloomberg ebay evernote facebook google jpmorgan microsoft nutanix pinterest pure-storage twitter uber
Lowest Common Ancestor of a Binary Tree 4 - for array of nodesMedium
Lowest Common Ancestor DefinitionMedium
Lowest Common Ancestor of a Binary Tree 3 - Given Parent PointerMediumfacebook twitter
Lowest Common Ancestor for a n-ary TreeMediumamazon
Lowest Common Ancestor of a Binary Tree 2 - Nodes may not exist in TreeMedium
Replace Elements with Greatest Element on Right SideEasyamazon
Invert Binary TreeEasyamazon apple bloomberg facebook google microsoft salesforce vmware
First Unique Character in a StringEasyadobe amazon apple bloomberg facebook goldman-sachs google huawei jpmorgan linkedin microsoft servicenow yahoo zillow zulily
Substring with Concatenation of All WordsHardadobe amazon apple bloomberg dropbox facebook google microsoft
Merge Two Binary TreesEasyadobe amazon apple bloomberg facebook huawei oracle salesforce
Palindrome Linked ListEasyadobe amazon apple bloomberg cisco facebook google grab intel ixl microsoft nutanix snapchat vmware
Climbing Stairs - Take atmost 3 stepsEasy
Intersection of Two Sorted ArraysMedium
Swap two number in place without temporary variablesMedium
Swap Kth node from beginning with Kth node from end in a Linked ListMedium
Subarray with sum divisible by kMedium
Second largest element in binary search treeMediumdropbox
Replace all occurrences of a pattern in a text by another stringMedium
Reverse a stack in place using recursionMedium
Reverse the given Array without using built in functionEasy
Print all sub sequences of a given arrayEasy
Pain FenceMediumgoogle
Number of elements less than or equal to a given number in a given subarrayMedium
Minimum Number of Deletions Of a StringMedium
Minimum Distance Between Two Elements in an ArrayEasy
Merge K Sorted ArraysMedium
Maximum Product of Three NumbersEasyamazon apple bloomberg cisco citadel coursera facebook goldman-sachs intuit redfin symantec
Maximum Pairwise Product 2 - Find pair with maximum product in array of IntegersMedium
Number of paths from source to destination in a directed acyclic graphMedium
Shortest Unsorted Continuous SubarrayMediumamazon bloomberg google liveramp redfin uber whatsapp