Problems

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

Active:Premium· 755 results

Title	Solution	Practice	Difficulty	Companies	Topics
772. Basic Calculator III	Solution	Solve	Hard	Amazon+13	Math Recursion+2
774. Minimize Max Distance to Gas Station	Solution	Solve	Hard	Amazon+1	Array Binary Search
776. Split BST	Solution	Solve	Medium	Amazon+1	Binary Search Tree Binary Tree+2
800. Similar RGB Color	Solution	Solve	Easy	Google	Enumeration Math+1
1055. Shortest Way to Form String	Solution	Solve	Medium	Google+2	Binary Search Greedy+2
1056. Confusing Number	Solution	Solve	Easy	Google	Math
1057. Campus Bikes	Solution	Solve	Medium	Google+1	Array Greedy+1
1058. Minimize Rounding Error to Meet Target	Solution	Solve	Medium	Airbnb	Array Greedy+3
1059. All Paths from Source Lead to Destination	Solution	Solve	Medium	Google	Graph Topological Sort
1060. Missing Element in Sorted Array	Solution	Solve	Medium	Amazon+4	Array Binary Search
1062. Longest Repeating Substring	Solution	Solve	Medium	Amazon+3	Binary Search Dynamic Programming+4
1063. Number of Valid Subarrays	Solution	Solve	Hard	Amazon+1	Array Monotonic Stack+1
1064. Fixed Point	Solution	Solve	Easy	Uber	Array Binary Search
1065. Index Pairs of a String	Solution	Solve	Easy	Amazon	Array Sorting+2
1066. Campus Bikes II	Solution	Solve	Medium	Google	Array Backtracking+3
1067. Digit Count in Range	Solution	Solve	Hard	Amazon	Dynamic Programming Math
1069. Product Sales Analysis II	Solution	Solve	Easy	Amazon	Database
1076. Project Employees II	Solution	Solve	Easy	Meta	Database
1077. Project Employees III	Solution	Solve	Medium	Meta	Database
1082. Sales Analysis I	Solution	Solve	Easy	Amazon	Database
1083. Sales Analysis II	Solution	Solve	Easy	Amazon	Database
1085. Sum of Digits in the Minimum Number	Solution	Solve	Easy	Amazon	Array Math
1086. High Five	Solution	Solve	Easy	Amazon+1	Array Hash Table+2
1087. Brace Expansion	Solution	Solve	Medium	Apple+4	Backtracking Breadth-First Search+1
1088. Confusing Number II	Solution	Solve	Hard	Google	Backtracking Math
1097. Game Play Analysis V	Solution	Solve	Hard	Gsn Games	Database
1098. Unpopular Books	Solution	Solve	Medium	Meta	Database
1099. Two Sum Less Than K	Solution	Solve	Easy	Amazon	Array Binary Search+2
1100. Find K-Length Substrings With No Repeated Characters	Solution	Solve	Medium	Amazon	Hash Table Sliding Window+1
1101. The Earliest Moment When Everyone Become Friends	Solution	Solve	Medium	Expedia+2	Array Sorting+1
1102. Path With Maximum Minimum Value	Solution	Solve	Medium	Amazon+2	Array Binary Search+5
1107. New Users Daily Count	Solution	Solve	Medium	LinkedIn	Database
1112. Highest Grade For Each Student	Solution	Solve	Medium	Coursera+1	Database
1113. Reported Posts	Solution	Solve	Easy	Meta	Database
1118. Number of Days in a Month	Solution	Solve	Easy	Amazon	Math
1119. Remove Vowels from a String	Solution	Solve	Easy	Amazon	String
1120. Maximum Average Subtree	Solution	Solve	Medium	Amazon	Binary Tree Depth-First Search+1
1121. Divide Array Into Increasing Sequences	Solution	Solve	Hard	Google	Array Counting
1126. Active Businesses	Solution	Solve	Medium	Yelp	Database
1127. User Purchase Platform	Solution	Solve	Hard	LinkedIn	Database
1132. Reported Posts II	Solution	Solve	Medium	Meta	Database
1133. Largest Unique Number	Solution	Solve	Easy	Amazon	Array Hash Table+1
1134. Armstrong Number	Solution	Solve	Easy	Amazon	Math
1135. Connecting Cities With Minimum Cost	Solution	Solve	Medium	Amazon	Graph Heap (Priority Queue)+2
1136. Parallel Courses	Solution	Solve	Medium	Amazon+6	Graph Topological Sort
1142. User Activity for the Past 30 Days II	Solution	Solve	Easy	Meta+1	Database
1149. Article Views II	Solution	Solve	Medium	LinkedIn	Database
1150. Check If a Number Is Majority Element in a Sorted Array	Solution	Solve	Easy	Salesforce	Array Binary Search
1151. Minimum Swaps to Group All 1's Together	Solution	Solve	Medium	Expedia+2	Array Sliding Window
1152. Analyze User Website Visit Pattern	Solution	Solve	Medium	Amazon+6	Array Hash Table+1