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Hashmap has O(1) time complexity for insertion, deletion, and retrieval in average case.
Hashmap uses hashing to store key-value pairs, allowing for constant time access.
Insertion, deletion, and retrieval operations have O(1) time complexity on average.
In worst case scenarios, time complexity can degrade to O(n) due to collisions.
Example: HashMap
Invert a binary tree by swapping left and right children of each node.
Start from the root node and swap its left and right children.
Recursively invert the left and right subtrees.
Continue this process until all nodes are inverted.
Reverse a linked list
Find shortest distance in unweighted graph
What people are saying about Amazon
I applied via Naukri.com and was interviewed in Oct 2024. There were 3 interview rounds.
Good overall 2 rounds coding lld hld eetc.
Verey hard round. dybamic programming, graphs trees eetc.
Asked mor questioons on aptitude and logical reasoning.
Amazon interview questions for designations
I applied via Job Portal
I was asked to share my previous experience first
I was given four coding questions.
Get interview-ready with Top Amazon Interview Questions
Graph and Array, medium and hard level respectively
Find pairs with target difference in a array
I applied via Naukri.com and was interviewed in Jul 2024. There were 4 interview rounds.
Quantitative aptitude
Impact of social media
Graphs,heaps and data structures
I am a software developer with 5 years of experience in web development. I am proficient in languages like Java, JavaScript, and Python.
5 years of experience in web development
Proficient in Java, JavaScript, and Python
Strong problem-solving skills
Experience with Agile development methodologies
Passionate about learning new technologies
I am a passionate software developer with experience in Java, Python, and web development.
Proficient in Java and Python programming languages
Experienced in web development using HTML, CSS, and JavaScript
Strong problem-solving skills and ability to work in a team
Completed projects include a Java-based inventory management system and a Python web application for data visualization
I applied via Recruitment Consulltant and was interviewed in Nov 2024. There was 1 interview round.
Dsa question easy to crack the interview
2 LEETCODE MEDIUM CODING QUESTIONS
Some of the top questions asked at the Amazon Software Developer interview -
The duration of Amazon Software Developer interview process can vary, but typically it takes about less than 2 weeks to complete.
based on 117 interviews
5 Interview rounds
based on 262 reviews
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