Amazon Development Centre India Gat Engineer Interview Questions and Answers

Q1. What is actual rule is using to sale more products in this company
Ans. 
The actual rule for selling more products in this company is to focus on customer needs and provide excellent customer service.
• Focus on customer needs and preferences

• Provide excellent customer service

• Offer promotions and discounts

• Maintain high product quality

• Stay up-to-date with market trends

• Build strong relationships with customers

• Encourage customer feedback and use it to improve

• Train sales staff to be knowledgeable a...read more
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Q1. What is AI ?
Ans. 
AI stands for Artificial Intelligence, which is the simulation of human intelligence processes by machines, especially computer systems.
• AI involves the development of algorithms that can perform tasks that typically require human intelligence.

• Examples of AI include speech recognition, image recognition, natural language processing, and autonomous vehicles.

• AI can be categorized into narrow AI (focused on a specific task...read more
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Q2. Tell me about machine learning
Ans. 
Machine learning is a branch of artificial intelligence that involves developing algorithms and models that can learn from and make predictions or decisions based on data.
• Machine learning uses algorithms to analyze data, learn from it, and make predictions or decisions.

• It is used in various fields such as healthcare, finance, marketing, and more.

• Examples of machine learning applications include recommendation systems, ...read more
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Round duration - 60 Minutes
Round difficulty - Medium

This round was purely based on Data Structures and Algorithms . One has to be fairly comfortable in solving Algorithmic problems to pass this round . Both the questions asked were quite common and luckily I had already prepared them from CodeStudio and LeetCode.

Q1. 
Binary Tree Traversals Problem Statement
Given a Binary Tree with 'N' nodes, where each node holds an integer value, your task is to compute the In-Order, Pre-Order, and Post-Order traversals of the binar...read more
Ans. 
Compute the In-Order, Pre-Order, and Post-Order traversals of a Binary Tree given in level-order format.
• Implement functions to perform In-Order, Pre-Order, and Post-Order traversals of a Binary Tree.

• Use level-order input to construct the Binary Tree.

• Traverse the Binary Tree recursively to generate the required traversals.

• Ensure proper handling of null nodes represented by -1 in the input.

• Return the three traversals as ...read more
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Q2. 
Reverse Linked List Problem Statement
Given a Singly Linked List of integers, your task is to reverse the Linked List by altering the links between the nodes.
Input:
The first line of input is an intege...read more
Ans. 
Reverse a singly linked list by altering the links between nodes.
• Iterate through the linked list and reverse the links between nodes

• Use three pointers to keep track of the current, previous, and next nodes

• Update the links between nodes to reverse the list

• Return the head of the reversed linked list
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Round duration - 45 Minutes
Round difficulty - Medium

This round basically tested some concepts from Data Structures and File Manipulation .

Q1. 
Intersection of Two Arrays Problem Statement
Given two arrays A and B with sizes N and M respectively, both sorted in non-decreasing order, determine their intersection.
The intersection of two arrays in...read more
Ans. 
The problem involves finding the intersection of two sorted arrays efficiently.
• Use two pointers to iterate through both arrays simultaneously.

• Compare elements at the pointers and move the pointers accordingly.

• Handle cases where elements are equal and update the intersection array.

• Return the intersection array as the result.
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