Support Engineer
Amazon
2 rounds | 5 Coding problems
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Interview preparation journey
Preparation
Duration: 3 months
Topics: Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic Programming
Tip

Tip 1 : Practice Atleast 250 Questions
Tip 2 : Do atleast 2 projects
Tip 3 : Do practice on internet
Tip 4 : Practice past year questions

Application process
Where: Company Website
Eligibility: 7 CGPA
Resume tip

Tip 1 : Have some projects on resume.
Tip 2 : Do not put false things on resume.

Interview rounds
01
Round
Medium
Online Coding Interview
Duration60 minutes
Interview date22 Aug 2022
Problems2
Ninja And The Strictly Increasing Array

#### He has been given an array ‘A’ containing positive integers ‘N’ integers.

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Problem approach

lenOfLongIncSubArr(arr, n)
Declare max = 1, len = 1
for i = 1 to n-1
if arr[i] > arr[i-1]
len++
else
if max < len
max = len
len = 1
if max < len
max = len
return max

Check If Linked List Is Palindrome

#### A List is a palindrome if it reads the same from the...

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Problem approach

Follow the steps below to solve the problem:

A simple solution is to use a stack of list nodes. This mainly involves three steps.
Traverse the given list from head to tail and push every visited node to stack.
Traverse the list again. For every visited node, pop a node from the stack and compare data of popped node with the currently visited node.
If all nodes matched, then retu...

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02
Round
Easy
Video Call
Duration45 minutes
Interview date11 Sep 2022
Problems3
Longest Common Subsequence

#### You have been given two Strings “STR1” and “STR2” of characters. Your task is to find the length of the longest common subsequence.

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Problem approach

The idea is to use Hashing. We first insert all elements in a Set. Then check all the possible starts of consecutive subsequences.

Sum Tree

#### For a given binary tree, convert it to its sum tree. That is, replace every node data with sum of its immediate children, keeping leaf nodes 0. Finally, return its preorder.

##### For example:
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Problem approach

Get the sum of nodes in the left subtree and right subtree. Check if the sum calculated is equal to the root’s data. Also, recursively check if the left and right subtrees are SumTrees.

ML Questions

Difference between Data Science and Data Analyst

Machine learning algorithm you will used for predicting car sales in next year

What is SVM and reinforcement technique?

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