| Prune Unary nodes to form Full Binary Tree |
Medium
|
yahoo
|
|
| Egyptian Fraction |
Easy
|
palantir
|
|
| External Sorting of integers |
Medium
|
amazon
|
|
| Three-Word Additive Cryptarithmetic Solver |
Medium
|
google
|
|
| Check if words chain to form a circle |
Medium
|
dropbox
|
|
| Infinite Prime Generator |
Medium
|
|
|
| Maximum of Two Numbers Without Conditionals |
Hard
|
nvidia
|
|
| Maximum Weight Spanning Tree |
Hard
|
microsoft
|
|
| Minimum and Maximum in an array with Optimal Comparisons |
Medium
|
facebook
|
|
| Point in Polygon |
Medium
|
nvidia
|
|
| Symmetric N-ary Tree Detection |
Easy
|
amazon
|
|
| Blackjack Optimal Strategy with Known Card Sequence |
Hard
|
MIT
|
|
| Custom Sort String |
Medium
|
amazon
facebook
google
uber
|
|
| Find All Conflicting Appointments |
Easy
|
|
|
| Maximum flow and bipartite matching |
Hard
|
|
|
| Remove a vertex and all connected edges from a graph |
Easy
|
|
|
| Minimum Insertion OR Deletion Steps to Make a String Palindrome |
Medium
|
|
|
| Minimum Deletion Steps to Make a String Palindrome |
Medium
|
|
|
| Closest Equal Element Queries |
Medium
|
|
|
| Check If Digits Are Equal in String After Operations I |
Easy
|
|
|
| Check If Digits Are Equal in String After Operations II |
Hard
|
|
|
| Choose K Elements With Maximum Sum |
Medium
|
|
|
| Concatenated Divisibility |
Hard
|
|
|
| Count Beautiful Numbers |
Hard
|
|
|
| Count Beautiful Splits in an Array |
Medium
|
|
|
| Count Cells in Overlapping Horizontal and Vertical Substrings |
Medium
|
|
|
| Count Connected Components in LCM Graph |
Hard
|
|
|
| Count Covered Buildings |
Medium
|
|
|
| Count Mentions Per User |
Medium
|
|
|
| Count Non-Decreasing Subarrays After K Operations |
Hard
|
|
|
| Count Numbers with Non-Decreasing Digits |
Hard
|
|
|
| Count Partitions with Even Sum Difference |
Easy
|
|
|
| Count Paths With the Given XOR Value |
Medium
|
|
|
| Count Special Subsequences |
Medium
|
|
|
| Count Substrings Divisible By Last Digit |
Hard
|
|
|
| Design Spreadsheet |
Medium
|
|
|
| Design Task Manager |
Medium
|
|
|
| Digit Operations to Make Two Integers Equal |
Medium
|
|
|
| DNA Pattern Recognition |
Medium
|
|
|
| Eat Pizzas! |
Medium
|
|
|
| Equal Sum Grid Partition I |
Medium
|
|
|
| Equal Sum Grid Partition II |
Hard
|
|
|
| Fill a Special Grid |
Medium
|
|
|
| Find Closest Person |
Easy
|
|
|
| Find Followers Count |
Easy
|
|
|
| Find Invalid IP Addresses |
Hard
|
|
|
| Find Minimum Cost to Remove Array Elements |
Medium
|
|
|
| Find Mirror Score of a String |
Medium
|
|
|
| Find Most Frequent Vowel and Consonant |
Easy
|
|
|
| Find Product Recommendation Pairs |
Medium
|
|
|