Interview Experience | On Campus - Aug 2020

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Associate Developer

SAP Labs

4 rounds | 7 Coding problems

Anonymous

Fresher | Aug 2020

Selected

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Interview preparation journey

Preparation

Duration: 6 months

Topics: Data structure, Algo, Database Management Systems, OS, Low level design

Tip

Tip 1 : Be consistent in solving DSA
Tip 2 : Keep revising core subjects

Application process

Where: Campus

Eligibility: 7+ CGPA

Resume tip

Tip 1 : Don't fake any thing
Tip 2 : Mention skills at the top

Interview rounds

Round

Medium

Online Coding Interview

Duration60 mins

Interview date5 Aug 2020

Problems1

Remove Consecutive Duplicates From String

You are given a string 'STR' consisting of lower and upper case characters. You need to remove the consecutive duplicates characters, and return the new string.

Example :

Problem approach

This can be solved using stacks and strings, just keep a separate variable along the character and keep counting frequency

Try solving now

Round

Medium

Video Call

Duration60 mins

Interview date7 Aug 2020

Problems2

Move Zeroes to End

Given an unsorted array of integers, you have to move the array elements in a way such that all the zeroes are transferred to the end, and...

Problem approach

This is a preety straightforward question just keep two pointers one at the start and one on second index and keep swapping once you find a 1 and 0 pair.

Try solving now

Technical questions

Design Product Notification for out of stocks products in an eCommerce application.
3 SQL queries( 1 on joins, 1 on nested query, and 1 on group-by).
He wrote around 10 SQL commands and asked to define them.
Difference between Delete, Drop, and Truncate.
Pointers and References.
Struct and Union with respective use cases.
Explain malloc, calloc, etc.

Problem approach

Tip 1: Brush your CS Fundamentals before interview

Round

Medium

Video Call

Duration60 mins

Interview date7 Aug 2020

Problems3

Largest subarray with equal number of 0s and 1s

You are given an array consisting of 0s and 1s. You need to find the length of the largest subarray with an equal number of 0s and 1s.

For example:

Problem approach

Replace 0's with -1 and now you have to find the sum of subarray with 0 sum and max size, which is standard

Try solving now

Check Permutation

Given 2 strings check if they are rotation of each other or not.

Problem approach

Tip 1: Ask clarifying questions
Tip 2: Involve interviewer

Try solving now

Technical Questions

Design a Car Rental System. ( I started with a basic design then he asked me to add features like transfer of ownership, etc.)
Normal Forms, ACID properties, and how to make transactions serializable.
Discussion on memory allocation and malloc, calloc, new, etc.
Design TinyURL( only approach was asked.)

Round

Easy

HR Round

Duration30 minutes

Interview date7 Aug 2020

Problems1

Basic HR Questions

Why SAP?
Why should we hire you?
What are your expectations from SAP?
Interests and job location.
What are your long term goals?
What co-curricular activities do you want to do in SAP?