Intern Amazon Interview Questions
Amazon's internship interview pairs approachable coding with a surprisingly real dose of Leadership Principles. These questions were reported by candidates interviewing for intern roles at Amazon, so they reflect the actual bar: one or two coding rounds at easy-to-medium difficulty, plus behavioral questions mapped to LPs like Customer Obsession, Learn and Be Curious, and Ownership. Even as an intern, you're expected to bring concrete stories — from class projects, clubs, or past internships — that show those principles in action. Drill the coding here to cover the fundamentals, and use the behavioral questions to prepare LP stories ahead of time. Most coding questions include a step-by-step solution.
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"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."
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"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Find a valid dependency order
You are given n tasks labeled from 0 to n - 1 and a list of dependency pairs dependencies, where each pair [a, b] means task b must be completed befor...
Describe handling deadlines, pride, and conflict
Behavioral questions Answer the following interview prompts with concrete examples from your past work/school/internships: 1. Tight deadline: Tell me ...
Explain inheritance, polymorphism, constructors, destructors
This question evaluates understanding of object-oriented programming concepts—specifically inheritance, polymorphism, constructors, and destructors—an...
Design a basic credit card system
This question evaluates object-oriented design and domain modeling skills, including class responsibilities, relationships, state management, transact...
Find minimum total range-increment to sort
This question evaluates algorithmic problem-solving skills in array manipulation and optimization, focusing on reasoning about range-increment operati...
Merge two sorted arrays in-place
This question evaluates array-manipulation and in-place algorithm skills, including understanding of sorted-data merging, index/pointer management, an...
Describe a failure and what you learned
Behavioral Describe a time you failed. - What was the situation and your goal? - What went wrong (your role/responsibility)? - What actions did you ta...
Implement Cache and Count Components
You are asked to solve two independent coding problems in this session, each followed by a short discussion. This mirrors a 60-minute Amazon SDE codin...
Manipulate time-series with Pandas groupby
Given a DataFrame events(user_id, event_type, ts_utc, revenue): 1) Parse ts_utc as timezone-aware, convert to America/Los_Angeles, and handle DST tran...
Count unique Morse-code word transformations
Given an array of lowercase strings words. Each letter 'a' to 'z' has a corresponding Morse code string (standard 26-letter mapping). A word’s transfo...
Implement nested object path lookup
This question evaluates parsing and traversal of nested maps and arrays, robust error handling for missing keys and out-of-bounds indices, and reasoni...
Find Most Frequent Values
Given an integer array nums and an integer k, return the k distinct values that occur most frequently in nums. The result may be returned in any order...
Implement Cache and Rotate Matrix
Solve the following two independent coding tasks. Task 1: Implement an LRU Cache Design a data structure LRUCache that stores integer keys and integer...
Print all odd numbers from an integer list
This question evaluates proficiency with array/list manipulation, parity checking, and handling edge cases such as negative values and integers outsid...