This article will explore the Amazon Leetcode Questions, how to prepare effectively, and where to find resources.
Table of Contents
1. Overview of Amazon Company
Amazon.com, Inc., commonly known as Amazon, is an American multinational technology company founded by Jeff Bezos on July 5, 1994, in Bellevue, Washington. Initially starting as an online bookstore, Amazon has since expanded to become a global leader in e-commerce, cloud computing, digital streaming, and artificial intelligence1. The company’s headquarters are located in Seattle, Washington, and Arlington, Virginia.
Amazon is known for its vast product offerings, including electronics, clothing, groceries, and more, often referred to as “The Everything Store.” It also operates several subsidiaries, such as Amazon Web Services (AWS), which provides cloud computing services, and Twitch, a popular live streaming platform1. Additionally, Amazon has made significant acquisitions, including Whole Foods Market and MGM Studios.
With a workforce of over 1.5 million employees worldwide, Amazon continues to innovate and expand its services, impacting various industries and communities globally
2. Why Are Amazon Leetcode Questions So Important?
Amazon’s technical interviews are designed to assess your problem-solving skills, coding proficiency, and ability to think critically under pressure. The questions you’ll encounter are often variations of problems found on Leetcode, a popular platform for practicing coding challenges.
Here’s why Amazon Leetcode questions are crucial for your preparation:
- Relevance: Practicing these questions gives you a realistic sense of what to expect.
- Patterns: Amazon interviewers often test candidates on specific problem-solving patterns, such as sliding windows, dynamic programming, and graph traversal. Leetcode helps you master these patterns.
- Efficiency: Solving Leetcode problems improves your ability to write clean, efficient, and bug-free code—an essential skill for any SDE role.
3. How to Approach Amazon Leetcode Questions
Preparing for Amazon Leetcode questions requires a strategic approach. Here’s a step-by-step guide to help you get started:
3.1 Understand the Interview Process
Amazon’s SDE interview process typically consists of the following stages:
- Online Assessment (OA): This includes coding challenges and behavioral questions.
- Technical Phone Screen: A live coding session with an Amazon engineer.
- Onsite Interviews: Multiple rounds of technical and behavioral interviews.
The coding challenges in these stages are often based on Leetcode Amazon problems, so focusing on these is key.
3.2 Focus on Key Topics
Amazon interview questions tend to revolve around specific topics. Here are the most common ones:
- Arrays and Strings: Sliding window, two-pointer techniques.
- Trees and Graphs: BFS, DFS, and shortest path algorithms.
- Dynamic Programming: Knapsack problems, subsequences, and matrix-based DP.
- Sorting and Searching: Binary search, quicksort, and mergesort.
- Hashing: Hash maps, hash sets, and frequency counters.
3.3 Practice, Practice, Practice
Consistency is key. Dedicate time daily to solving problems, starting with easy ones and gradually moving to medium and hard levels. Focus on understanding the underlying concepts rather than memorizing solutions.
List of all Leetcode Problem
1. Easy Problems
2. Medium Problems
3. Hard Problems
Amazon Leetcode Questions
| S.No. | Name | Level of Question | Solution |
| 1 | Binary Tree Level Order Traversal | Medium | Link |
| 2 | LRU Cache | Medium | Link |
| 3 | Maximum Length of Pair Chain | Medium | Link |
| 4 | Convert BST to Greater Tree | Medium | Link |
| 5 | Solve the Equation | Medium | Link |
| 6 | Optimal Division | Medium | Link |
| 7 | Complex Number Multiplication | Medium | Link |
| 8 | Split Linked List in Parts | Medium | Link |
| 9 | Top-K Frequent Words | Medium | Link |
| 10 | Maximum Width of Binary Tree | Medium | Link |
| 11 | Encode and Decode Tinyurl | Medium | Link |
| 12 | K-Diff Pairs in an Array | Medium | Link |
| 13 | Minesweeper | Medium | Link |
| 14 | Longest Palindromic Subsequence | Medium | Link |
| 15 | Most Frequent Subtree Sum | Medium | Link |
| 16 | Sort Characters by Frequency | Medium | Link |
| 17 | Serialize and Deserialize BST | Medium | Link |
| 18 | Find All Anagrams in a String | Medium | Link |
| 19 | Rotate Function | Medium | Link |
| 20 | Insert Delete Getrandom O(1) | Medium | Link |
| 21 | Design Twitter | Medium | Link |
| 22 | Search a 2D Matrix II | Medium | Link |
| 23 | Product of Array Except Self | Medium | Link |
| 24 | Lowest Common Ancestor of a Binary Tree | Medium | Link |
| 25 | Lowest Common Ancestor of a Binary Search Tree | Medium | Link |
| 26 | Kth Largest Element in an Array | Medium | Link |
| 27 | Count Primes | Medium | Link |
| 28 | Number of Islands | Medium | Link |
| 29 | Binary Tree Right Side View | Medium | Link |
| 30 | Word Break | Medium | Link |
| 31 | Copy List With Random Pointer | Medium | Link |
| 32 | Letter Combinations of a Phone Number | Medium | Link |
| 33 | String to Integer | Medium | Link |
| 34 | Word Ladder II | Hard | Link |
| 35 | Word Ladder | Hard | Link |
| 36 | Sliding Window Maximum | Hard | Link |
| 37 | Serialize and Deserialize Binary Tree | Hard | Link |
| 38 | Cut Off Trees for Golf Event | Hard | Link |
| 39 | Super Washing Machines | Hard | Link |
| 40 | LFU Cache | Hard | Link |
| 41 | Two Sum II Input Array is Sorted | Medium | Link |
| 42 | Set Matrix Zeroes | Medium | Link |
| 43 | Validate Binary Search Tree | Medium | Link |
| 44 | Gray Code | Medium | Link |
| 45 | Subsets | Medium | Link |
| 46 | Min Stack | Medium | Link |
| 47 | Group Anagrams | Medium | Link |
| 48 | Rotate Image | Medium | Link |
| 49 | Trapping Rain Water | Hard | Link |
| 50 | Merge Two Sorted Lists | Easy | Link |
| 51 | Reverse Linked List | Easy | Link |
| 52 | Valid Parentheses | Easy | Link |
| 53 | Intersection of Two Linked Lists | Easy | Link |
| 54 | Longest Palindromic Substring | Medium | Link |
| 55 | 3Sum | Medium | Link |
| 56 | Longest Substring without Repeating Characters | Medium | Link |
| 57 | Add Two Numbers | Medium | Link |
| 58 | Two Sum | Easy | Link |
FAQs
1. Are Amazon Leetcode questions enough to crack the interview?
While practicing Leetcode questions is essential, focusing on system design and behavioral questions and understanding Amazon’s leadership principles are equally important.
2. What is the difficulty level of Leetcode Amazon questions?
The difficulty level of Leetcode Amazon questions varies depending on the role and level you’re applying for. Most questions range from medium to hard, with a few easy ones in the mix.
3. How should I prepare for Amazon Leetcode questions 2025?
Start by identifying key topics, practicing problems from Leetcode and GitHub repositories, and simulating mock interviews. Stay consistent and track your progress.