American Express interview experience Real time questions & tips from candidates to crack your interview

SDE - Intern

American Express
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2 rounds | 4 Coding problems

Interview preparation journey

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Preparation
Duration: 7 Months
Topics: Data structures and algorithms with lots of question practice topic wise, core subjects like that oops,dbms,os.
Tip
Tip

Tip 1 : all we know focus on ds and algorithms is must but how should we prepare ? so , the answer is read concepts and then practice question topic wise or company wise in gfg.
Tip 2 : do focus on cp it is must to clear very first coding round. Also many of them do cp but in their comfort zone that means those question from which they have good hold but i say this would not give any benefit . so , solve que out of comfort zone , which takes time but is is most efficient way.
Tip 3 : Also balance between cp and projects is must.

Application process
Where: Campus
Eligibility: 7 cgpa
Resume Tip
Resume tip

Tip 1 : it is crisp . for ex - you have a good knowledge on java, cpp , c , python . and lets say you have basic knowledge of html,css then don't mention these subjects. 
Tip 2 : Achievements should be in reverse chronological order like first focus on college achievements , then on school.
Tip 3 : i saw like many of them made just one resume and use for all , but i suggest each time made resume according to post you apply for and in which company. which increases your chances in shortlisted candidates.

Interview rounds

01
Round
Medium
Online Coding Interview
Duration90 minutes
Interview date21 Oct 2020
Coding problem3

It consist three question - first que is of related to tree and i gave difficulty level of this question as hard. second que is of based on logical and reasoning , it is medium level question and third que can be done by map and it is also medium level que.
In codility platform we are not able to see hidden test cases whether it is satisfied or not . we just have to submit after passing sample testcases.

1. Minimum number of swaps required to sort an array

Easy
10m average time
90% success
0/40
Asked in companies
HikeIBMSamsung

You have been given an array 'ARR' of 'N' distinct elements.

Your task is to find the minimum no. of swaps required to sort the array.

For example:
For the given input array [4, 3, 2, 1], the minimum no. of swaps required to sort the array is 2, i.e. swap index 0 with 3 and 1 with 2 to form the sorted array [1, 2, 3, 4].
Try solving now

2. Maximum sum of non-adjacent elements

Moderate
15m average time
85% success
0/80
Asked in companies
OYOOLX GroupWalmart

You are given an array/list of ‘N’ integers. You are supposed to return the maximum sum of the subsequence with the constraint that no two elements are adjacent in the given array/list.

Note:
A subsequence of an array/list is obtained by deleting some number of elements (can be zero) from the array/list, leaving the remaining elements in their original order.
Try solving now

3. Left View Of Binary Tree

Moderate
30m average time
60% success
0/80
Asked in companies
ZS AssociatesFlipkartSAP Labs

You have been given a Binary Tree of 'n' nodes, where the nodes have integer values



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

alt text

The Left View of the tree will be:  2 35 2 
Try solving now
02
Round
Medium
Video Call
Duration30 minutes
Interview date28 Oct 2020
Coding problem1

basically this round is just same as HR round . they asked me behavioural questions and about my projects , hackathon. the timing is mid noon and interviewer is supportive , it makes first comfortable then start questioning . for this round i suggest be honest , don't just express your qualities but trying to show them by your skills and work.

1. Basic HR Questions

Who is your role model?

Why do you want to join the company?

Here's your problem of the day

Solving this problem will increase your chance to get selected in this company

Skill covered: Programming

What is the output of print(type("Python"))?

Choose another skill to practice
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