Amazon interview questions
Online test → Technical → Technical·59% entry level
DSA
Showing 45 of 5,938 reported in this area
Find the diameter of a binary tree.
Check whether a given binary tree is a Binary Search Tree (BST).
Search an element in a row-wise and column-wise sorted matrix
Design and implement an LRU Cache.
Find the next greater element for each element in an array.
Print the top view of a binary tree.
Print the left view of a binary tree.
Add two numbers represented by linked lists.
Find the Lowest Common Ancestor (LCA) of two nodes in a Binary Tree.
Count the number of inversions in an array
Print the boundary traversal of a binary tree.
Find the first non-repeating character in a given string.
Reverse a linked list in groups of size k.
Clone a linked list with next and random pointer
Find the vertical sum in a binary tree
Reverse every k nodes in a linked list.
Print all permutations of a given string.
Perform boundary traversal of a binary tree.
Find the median of a stream of running integers
Search an element in a sorted and rotated array
Find the next greater number with the same set of digits
Find the longest palindromic substring in a given string.
Print a matrix in spiral order.
Find the row with the maximum number of 1s in a binary matrix
Find the Lowest Common Ancestor (LCA) in a Binary Tree.
Perform level order traversal of a binary tree in spiral (zigzag) form.
Serialize and deserialize a binary tree
Convert an infix expression to postfix expression
Design and implement an LRU (Least Recently Used) Cache.
Find the length of the longest substring without repeating characters.
Given a sorted dictionary of an alien language, find the order of characters.
Find the maximum path sum in a binary tree
Check whether a given linked list is a palindrome.
Check whether a binary tree is a binary search tree
Merge overlapping intervals.
Convert a given binary tree to a sum tree
Find an element in a rotated sorted array.
Print a binary tree in vertical order traversal.
Connect nodes at the same level in a binary tree.
Merge k sorted arrays into a single sorted array.
Perform zigzag (spiral) traversal of a binary tree
Perform zig-zag (spiral) traversal of a binary tree
Find the distance between two given nodes in a binary tree.
Find the first non-repeating character in a stream of characters
Reverse a linked list.
CS fundamentals
Showing 3 of 1,563 reported in this area
What is the difference between a process and a thread?
Explain ACID properties in DBMS
Explain the difference between TCP and UDP.
Behavioural
Showing 3 of 532 reported in this area
Tell me about a situation where you worked on a tight deadline.
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Describe a time when you had a conflict with your manager and how you handled it
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Describe a situation where you had a conflict with your manager and how you handled it.
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System design
Showing 3 of 479 reported in this area
Design a Parking Lot system.
Design a Chess game.
Design a notification system
Aptitude
Showing 3 of 84 reported in this area
Find the roots of a quadratic equation
Solve a linear equation in one variable
Aptitude and logical reasoning problems
Puzzles
Showing 3 of 39 reported in this area
Given a jar of pills, find the jar with defective pills.
Given a prime number p ≥ 5, prove that (p² − 1) is divisible by 24.
A logical puzzle about cutting a cake that is not of a regular shape.
Showing 60 of 7,012 questions. Ranked by how often the same question came back across reports.
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What questions does Amazon ask?
Candidate interview reports most often cover DSA (69%) and CS fundamentals (18%).
How many rounds does Amazon interview have?
Candidate interview reports show an average of 4.1 rounds per experience, with a typical sequence of Online test → Technical → Technical. Individual interview paths can vary.
Is the Amazon interview hard?
Among questions with a reported difficulty, the mix is easy 26%, medium 61%, hard 13%.