| Neighboring Bitwise XOR | Medium | | |
| Bitwise XOR of All Pairings | Medium | | |
| Minimize XOR | Medium | | |
| Generate random numbers from list based on given probabilities | Medium | triplebyte | |
| Find the Prefix Common Array of Two Arrays | Medium | | |
| Minimum Length of String After Operations | Medium | | |
| Check if a Parentheses String Can Be Valid | Medium | | |
| Construct K Palindrome Strings | Medium | | |
| Word Subsets | Medium | amazon
facebook
google | |
| Find nearest larger number for index in an array | Medium | google | |
| Implement a bit array | Medium | amazon | |
| Minimum Number of Operations to Move All Balls to Each Box | Medium | | |
| Square root of a real number | Medium | | |
| Shifting Letters II | Medium | | |
| Break a string into lines of length k without breaking words | Medium | amazon | |
| Maximum coins from top-left to bottom-right with right or down moves | Medium | zillow | |
| Smallest set to cover all intervals | Medium | google | |
| Number of Ways to Split Array | Medium | | |
| Generate a finite, but an arbitrarily large binary tree in O(1) time | Medium | jane-street | |
| Count Vowel Strings in Ranges | Medium | | |
| Best Sightseeing Pair | Medium | wayfair | |
| Find Largest Value in Each Tree Row Problem | Medium | amazon
apple
facebook
linkedin
microsoft | |
| Check if one can reach the last index in a list of hops starting with index 0 | Medium | pinterest | |
| Shortest substring containing all characters in a set | Medium | square | |
| Minimum Number of Operations to Sort a Binary Tree by Level | Medium | | |
| Reverse Odd Levels of Binary Tree Problem | Medium | | |
| Construct String With Repeat Limit | Medium | | |
| Maximum Average Pass Ratio | Medium | | |
| Continuous Subarrays | Medium | | |
| Find Score of an Array After Marking All Elements | Medium | | |
| Maximum Beauty of an Array After Applying Operation | Medium | | |
| Find Longest Special Substring That Occurs Thrice 2 | Medium | | |
| Find Longest Special Substring That Occurs Thrice 1 | Medium | | |
| Special Array 2 | Medium | | |
| Minimum Limit of Balls in a Bag | Medium | | |
| Maximum Number of Integers to Choose From a Range 1 | Medium | | |
| Move Pieces to Obtain a String Problem | Medium | | |
| Binary Tree Pruning | Medium | amazon
capital-one
google
hulu
twitter
buffer-box | |
| Construct Binary Search Tree BST from Preorder Traversal | Medium | amazon
facebook
microsoft
oracle | |
| K closest Points to Origin | Medium | amazon
apple
asana
ebay
expedia
facebook
goldman-sachs
google
linkedin
microsoft
oracle
paypal
uber
visa
yahoo | |
| Plus One 2 - Given number as Linked List plus one | Medium | amazon
google | |
| Adding Spaces to a String | Medium | | |
| Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree | Medium | amazon | |
| Debounce | Medium | facebook | |
| Interval List Intersections | Medium | amazon
apple
bloomberg
cruise-automation
doordash
facebook
google
oracle
pinterest
snapchat
uber | |
| Make String a Subsequence Using Cyclic Increments | Medium | | |
| Partition Array According to Given Pivot | Medium | amazon | |
| Valid Palindrome 4 - is string palindrome after at most 2 char replacement | Medium | | |
| Shortest Distance After Road Addition Queries I | Medium | | |
| Target Sum Problem | Medium | facebook
google
microsoft | |