Dashboard Questions Topics Companies Sheets

Data Structures & Algorithms

Practice 3,374+ coding problems from top companies. Master DSA concepts and ace your interviews.

3,374

Problems

840

Easy

1762

Medium

772

Hard

Difficulty

All3374 Easy840 Medium1762 Hard772

Title	Solve	Difficulty	Companies	Topics
1101. The Earliest Moment When Everyone Become Friends	Solve	Medium	Expedia+1	Array Sorting+1
1102. Path With Maximum Minimum Value	Solve	Medium	Amazon+3	Array Binary Search+5
1103. Distribute Candies to People	Solve	Easy	PayTM	Math Simulation
1104. Path In Zigzag Labelled Binary Tree	Solve	Medium	Bloomberg	Binary Tree Math+1
1105. Filling Bookcase Shelves	Solve	Medium	Amazon+1	Array Dynamic Programming
1106. Parsing A Boolean Expression	Solve	Hard	Affinity+1	Recursion Stack+1
1107. New Users Daily Count	Solve	Medium	LinkedIn	Database
1108. Defanging an IP Address	Solve	Easy	Amazon+1	String
1109. Corporate Flight Bookings	Solve	Medium	Amazon+1	Array Prefix Sum
1110. Delete Nodes And Return Forest	Solve	Medium	Facebook+3	Array Binary Tree+3
1111. Maximum Nesting Depth of Two Valid Parentheses Strings	Solve	Medium	Bloomreach	Stack String
1112. Highest Grade For Each Student	Solve	Medium	Coursera	Database
1113. Reported Posts	Solve	Easy	Facebook	Database
1114. Print in Order	Solve	Easy	Google	Concurrency
1115. Print FooBar Alternately	Solve	Medium	-	Concurrency
1116. Print Zero Even Odd	Solve	Medium	-	Concurrency
1117. Building H2O	Solve	Medium	-	Concurrency
1118. Number of Days in a Month	Solve	Easy	Amazon	Math
1119. Remove Vowels from a String	Solve	Easy	Amazon	String
1120. Maximum Average Subtree	Solve	Medium	Amazon+1	Binary Tree Depth-First Search+1
1121. Divide Array Into Increasing Sequences	Solve	Hard	Google	Array Counting
1122. Relative Sort Array	Solve	Easy	Google	Array Counting Sort+2
1123. Lowest Common Ancestor of Deepest Leaves	Solve	Medium	Amazon+1	Binary Tree Breadth-First Search+3
1124. Longest Well-Performing Interval	Solve	Medium	Infosys	Array Hash Table+3
1125. Smallest Sufficient Team	Solve	Hard	Amazon	Array Bit Manipulation+2
1126. Active Businesses	Solve	Medium	Yelp	Database
1127. User Purchase Platform	Solve	Hard	LinkedIn	Database
1128. Number of Equivalent Domino Pairs	Solve	Easy	Adobe+1	Array Counting+1
1129. Shortest Path with Alternating Colors	Solve	Medium	Amazon+4	Breadth-First Search Graph
1130. Minimum Cost Tree From Leaf Values	Solve	Medium	Adobe+2	Array Dynamic Programming+3
1131. Maximum of Absolute Value Expression	Solve	Medium	Microsoft	Array Math
1132. Reported Posts II	Solve	Medium	Facebook	Database
1133. Largest Unique Number	Solve	Easy	Amazon	Array Hash Table+1
1134. Armstrong Number	Solve	Easy	Amazon	Math
1135. Connecting Cities With Minimum Cost	Solve	Medium	Amazon	Graph Heap (Priority Queue)+2
1136. Parallel Courses	Solve	Medium	Amazon	Graph Topological Sort
1137. N-th Tribonacci Number	Solve	Easy	Adobe+3	Dynamic Programming Math+1
1138. Alphabet Board Path	Solve	Medium	Amazon	Hash Table String
1139. Largest 1-Bordered Square	Solve	Medium	Samsung	Array Dynamic Programming+1
1140. Stone Game II	Solve	Medium	Google	Array Dynamic Programming+3
1141. User Activity for the Past 30 Days I	Solve	Easy	Bloomberg+2	Database
1142. User Activity for the Past 30 Days II	Solve	Easy	Facebook+1	Database
1143. Longest Common Subsequence	Solve	Medium	Amazon+3	Dynamic Programming String
1144. Decrease Elements To Make Array Zigzag	Solve	Medium	Adobe+1	Array Greedy
1145. Binary Tree Coloring Game	Solve	Medium	Google	Binary Tree Depth-First Search+1
1146. Snapshot Array	Solve	Medium	Google+2	Array Binary Search+2
1147. Longest Chunked Palindrome Decomposition	Solve	Hard	Google	Dynamic Programming Greedy+4
1148. Article Views I	Solve	Easy	Adobe+7	Database
1149. Article Views II	Solve	Medium	LinkedIn	Database
1150. Check If a Number Is Majority Element in a Sorted Array	Solve	Easy	Facebook+1	Array Binary Search