Problems

3,848+ problems · 928 Easy · 2014 Medium · 906 Hard

Active:Premium· 755 results

Title	Solution	Practice	Difficulty	Companies	Topics
3004. Maximum Subtree of the Same Color	Solution	Solve	Medium	BlackRock+1	Array Depth-First Search+2
3009. Maximum Number of Intersections on the Chart	Solution	Solve	Hard	Microsoft	Array Binary Indexed Tree+2
3018. Maximum Number of Removal Queries That Can Be Processed I	Solution	Solve	Hard	-	Array Dynamic Programming
3023. Find Pattern in Infinite Stream I	Solution	Solve	Medium	Uber	Array Hash Function+3
3032. Count Numbers With Unique Digits II	Solution	Solve	Easy	Amazon	Dynamic Programming Hash Table+1
3037. Find Pattern in Infinite Stream II	Solution	Solve	Hard	Uber	Array Hash Function+3
3050. Pizza Toppings Cost Analysis	Solution	Solve	Medium	Amazon	Database
3051. Find Candidates for Data Scientist Position	Solution	Solve	Easy	Hashedin	Database
3052. Maximize Items	Solution	Solve	Hard	Hashedin	Database
3053. Classifying Triangles by Lengths	Solution	Solve	Easy	Aon	Database
3054. Binary Tree Nodes	Solution	Solve	Medium	Google	Database
3055. Top Percentile Fraud	Solution	Solve	Medium	-	Database
3056. Snaps Analysis	Solution	Solve	Medium	-	Database
3057. Employees Project Allocation	Solution	Solve	Hard	-	Database
3058. Friends With No Mutual Friends	Solution	Solve	Medium	-	Database
3059. Find All Unique Email Domains	Solution	Solve	Easy	-	Database
3060. User Activities within Time Bounds	Solution	Solve	Hard	-	Database
3061. Calculate Trapping Rain Water	Solution	Solve	Hard	-	Database
3062. Winner of the Linked List Game	Solution	Solve	Easy	-	Linked List
3063. Linked List Frequency	Solution	Solve	Easy	-	Counting Hash Table+1
3064. Guess the Number Using Bitwise Questions I	Solution	Solve	Medium	-	Bit Manipulation Interactive
3073. Maximum Increasing Triplet Value	Solution	Solve	Medium	Uber	Array Ordered Set
3078. Match Alphanumerical Pattern in Matrix I	Solution	Solve	Medium	Uber+1	Array Hash Table+2
3087. Find Trending Hashtags	Solution	Solve	Medium	-	Database
3088. Make String Anti-palindrome	Solution	Solve	Hard	Intuit	Counting Sort Greedy+2
3089. Find Bursty Behavior	Solution	Solve	Medium	-	Database
3094. Guess the Number Using Bitwise Questions II	Solution	Solve	Medium	-	Bit Manipulation Interactive
3103. Find Trending Hashtags II	Solution	Solve	Hard	-	Database
3104. Find Longest Self-Contained Substring	Solution	Solve	Hard	Amazon	Binary Search Hash Table+2
3109. Find the Index of Permutation	Solution	Solve	Medium	-	Array Binary Indexed Tree+5
3118. Friday Purchase III	Solution	Solve	Medium	-	Database
3119. Maximum Number of Potholes That Can Be Fixed	Solution	Solve	Medium	Geico+1	Greedy Sorting+1
3124. Find Longest Calls	Solution	Solve	Medium	IBM	Database
3125. Maximum Number That Makes Result of Bitwise AND Zero	Solution	Solve	Medium	Salesforce	Greedy Sorting+1
3126. Server Utilization Time	Solution	Solve	Medium	-	Database
3135. Equalize Strings by Adding or Removing Characters at Ends	Solution	Solve	Medium	Salesforce	Binary Search Dynamic Programming+3
3140. Consecutive Available Seats II	Solution	Solve	Medium	-	Database
3141. Maximum Hamming Distances	Solution	Solve	Hard	-	Array Bit Manipulation+1
3150. Invalid Tweets II	Solution	Solve	Easy	-	Database
3155. Maximum Number of Upgradable Servers	Solution	Solve	Medium	Snowflake	Array Binary Search+1
3156. Employee Task Duration and Concurrent Tasks	Solution	Solve	Hard	-	Database
3157. Find the Level of Tree with Minimum Sum	Solution	Solve	Medium	Microsoft	Binary Tree Breadth-First Search+2
3166. Calculate Parking Fees and Duration	Solution	Solve	Medium	-	Database
3167. Better Compression of String	Solution	Solve	Medium	Goldman Sachs+1	Counting Hash Table+2
3172. Second Day Verification	Solution	Solve	Easy	-	Database
3173. Bitwise OR of Adjacent Elements	Solution	Solve	Easy	Adobe	Array Bit Manipulation
3182. Find Top Scoring Students	Solution	Solve	Medium	-	Database
3183. The Number of Ways to Make the Sum	Solution	Solve	Medium	-	Array Dynamic Programming
3188. Find Top Scoring Students II	Solution	Solve	Hard	-	Database
3189. Minimum Moves to Get a Peaceful Board	Solution	Solve	Medium	-	Array Counting Sort+2