Dashboard Questions Topics Companies Sheets

Amazon Interview Questions

1,113 coding problems asked in Amazon interviews. Prepare for your technical interview with real questions.

1,113

Problems

267

Easy

645

Medium

201

Hard

Difficulty

All1113 Easy267 Medium645 Hard201

Title	Solve	Difficulty	Companies	Topics
108. Convert Sorted Array to Binary Search Tree	Solve	Easy	Amazon+4	Array Binary Search Tree+3
109. Convert Sorted List to Binary Search Tree	Solve	Medium	Amazon+3	Binary Search Tree Binary Tree+3
110. Balanced Binary Tree	Solve	Easy	Adobe+4	Binary Tree Depth-First Search+1
111. Minimum Depth of Binary Tree	Solve	Easy	Acko+15	Binary Tree Breadth-First Search+2
112. Path Sum	Solve	Easy	Amazon+4	Binary Tree Breadth-First Search+2
113. Path Sum II	Solve	Medium	Amazon+4	Backtracking Binary Tree+2
114. Flatten Binary Tree to Linked List	Solve	Medium	Amazon+3	Binary Tree Depth-First Search+3
115. Distinct Subsequences	Solve	Hard	Amazon+2	Dynamic Programming String
116. Populating Next Right Pointers in Each Node	Solve	Medium	Adobe+11	Binary Tree Breadth-First Search+3
117. Populating Next Right Pointers in Each Node II	Solve	Medium	Adobe+8	Binary Tree Breadth-First Search+3
118. Pascal's Triangle	Solve	Easy	Adobe+17	Array Dynamic Programming
119. Pascal's Triangle II	Solve	Easy	Adobe+3	Array Dynamic Programming
120. Triangle	Solve	Medium	Amazon+1	Array Dynamic Programming
121. Best Time to Buy and Sell Stock	Solve	Easy	Adobe+30	Array Dynamic Programming
122. Best Time to Buy and Sell Stock II	Solve	Medium	Amazon+7	Array Dynamic Programming+1
123. Best Time to Buy and Sell Stock III	Solve	Hard	Amazon+2	Array Dynamic Programming
124. Binary Tree Maximum Path Sum	Solve	Hard	Adobe+14	Binary Tree Depth-First Search+2
125. Valid Palindrome	Solve	Easy	Adobe+8	String Two Pointers
126. Word Ladder II	Solve	Hard	Amazon+4	Backtracking Breadth-First Search+2
127. Word Ladder	Solve	Hard	Adobe+8	Breadth-First Search Hash Table+1
128. Longest Consecutive Sequence	Solve	Medium	Adobe+9	Array Hash Table+1
129. Sum Root to Leaf Numbers	Solve	Medium	Amazon+4	Binary Tree Depth-First Search+1
131. Palindrome Partitioning	Solve	Medium	Amazon+4	Backtracking Dynamic Programming+1
132. Palindrome Partitioning II	Solve	Hard	Amazon	Dynamic Programming String
133. Clone Graph	Solve	Medium	Amazon+5	Breadth-First Search Depth-First Search+2
134. Gas Station	Solve	Medium	Adobe+8	Array Greedy
135. Candy	Solve	Hard	Adobe+21	Array Greedy
136. Single Number	Solve	Easy	Adobe+8	Array Bit Manipulation
137. Single Number II	Solve	Medium	Amazon+10	Array Bit Manipulation
138. Copy List with Random Pointer	Solve	Medium	Aditya Birla group+30	Hash Table Linked List
139. Word Break	Solve	Medium	Accenture+38	Array Dynamic Programming+4
140. Word Break II	Solve	Hard	Adobe+7	Array Backtracking+5
141. Linked List Cycle	Solve	Easy	42gearMobilitySystems+131	Hash Table Linked List+1
142. Linked List Cycle II	Solve	Medium	Amazon+1	Hash Table Linked List+1
143. Reorder List	Solve	Medium	Adobe+6	Linked List Recursion+2
146. LRU Cache	Solve	Medium	Accolite+56	Design Doubly-Linked List+2
148. Sort List	Solve	Medium	Amazon+4	Divide and Conquer Linked List+3
149. Max Points on a Line	Solve	Hard	Amazon+4	Array Geometry+2
150. Evaluate Reverse Polish Notation	Solve	Medium	Amazon+6	Array Math+1
151. Reverse Words in a String	Solve	Medium	Amazon+5	String Two Pointers
152. Maximum Product Subarray	Solve	Medium	Adobe+6	Array Dynamic Programming
153. Find Minimum in Rotated Sorted Array	Solve	Medium	Adobe+6	Array Binary Search
155. Min Stack	Solve	Medium	Adobe+7	Design Stack
157. Read N Characters Given Read4	Solve	Easy	Amazon+4	Array Interactive+1
159. Longest Substring with At Most Two Distinct Characters	Solve	Medium	Amazon+1	Hash Table Sliding Window+1
160. Intersection of Two Linked Lists	Solve	Easy	Adobe+7	Hash Table Linked List+1
162. Find Peak Element	Solve	Medium	Amazon+8	Array Binary Search
164. Maximum Gap	Solve	Medium	Amazon+1	Array Bucket Sort+2
165. Compare Version Numbers	Solve	Medium	Amazon+3	String Two Pointers
167. Two Sum II - Input Array Is Sorted	Solve	Medium	Adobe+5	Array Binary Search+1