SDE - 1
Amazon
3 rounds | 4 Coding problems
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Interview preparation journey
Preparation
Duration: 12 months
Topics: Trees, Graphs, Dynamic Programming, Operating System, OOPS, Linked List
Tip

Tip 1 : Try to learn the basic fundamentals first.
Tip 2 : Give as much contests you can, It will help you in coding rounds.
Tip 3 : Practice as much you can.

Application process
Where: Campus
Eligibility: Above 7 CGPA
Resume tip

Tip 1 : Make it one-pager
Tip 2 : Mention things that are related to the job profile only

Interview rounds
01
Round
Medium
Online Coding Interview
Duration120 minutes
Interview date6 Dec 2022
Problems2
Remove Duplicates From String

#### Your task is to remove all the duplicate occurrences of characters in the string.

##### Fo...
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Problem approach

I simply traverse the linked list and skip all the next elements which have same value;

Left view of Binary Tree

#### Given a binary tree. Print the Left View of the Tree.

##### Example :
``````If the input tree is as depicted in the picture:
``````

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Problem approach

I simply do the preorder and at any point, if no element is printed at that level then I print that element. Its quite a standard question.

02
Round
Medium
Video Call
Duration45 minutes
Interview date1 Jun 2022
Problems1
String Sorting
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03
Round
Medium
Video Call
Duration45 minutes
Interview date7 Jun 2022
Problems1
Longest Palindromic Substring

#### Your task is to find the longest palindromic substring. If there is more than one palindromic substring with the maximum len...

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Problem approach

Its a typical 2D dp problem, for string(i,...j) to be palindrome string[i]=string[j] and string(i+1...j-1) should be palindrome. Like how we can break the problems in smaller parts and find the longest palindromic substring by applying 2D DP. I just make him understand my approach and he was out of time, so he finishes the interview there and he was satisfied with my approach.

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