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

SDE - 1

Qualcomm
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4 rounds | 6 Coding problems

Interview preparation journey

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Preparation
Duration: 12 months
Topics: Data Structures, OOPS, Operating System, DBMS, Networking, Algorithms, Pointers
Tip
Tip

Tip 1 : Focus on the foundation; every topic's basics should be strong. You should have thorough or ground-level knowledge of what you are studying, what would be advantageous to use, and consider all the corner cases.
Tip 2 : Practice problem solving (500+ questions), and maintain a coding profile on leetcode and other coding platforms.
Tip 3 : In projects, you should be knowing about your contribution and in-depth knowledge about technologies used in the project. Mention at least 2 projects in your resume.

Application process
Where: Campus
Eligibility: Above 8 CGPA, CSE & ISE students were allowed to sit
Resume Tip
Resume tip

Tip 1 : Neat and Single-page resume, 
Tip 2 : Never lie in your resume, Mention links of LinkedIn, Coding profiles

Interview rounds

01
Round
Medium
Online Coding Interview
Duration60 minutes
Interview date17 Aug 2021
Coding problem1

The test happened on an online website. About 300 students from my college were giving test.

1. MCQ Questions

C Programming (15 questions)
Aptitude (15 questions)
CSE fundamentals (15 questions) like OS, DBMS, and Networking

 

Number Of MCQs - 45 

Problem approach

Tip 1: Go through all the topics
Tip 2: Make proper notes
Tip 3: Revise on a daily basis until you feel confident.

02
Round
Medium
Face to Face
Duration125 minutes
Interview date19 Aug 2021
Coding problem2

It was a panel round, two senior interviewers were there. They started with a puzzle and then asked me about my projects, and grilled me on various aspects like what was your contribution, how did you learn new technologies, and what difficulties did you face. 

Then asked me a coding question, and I was able to solve the question. then asked me OS question

1. Compress the String

Moderate
32m average time
60% success
0/80
Asked in companies
ArcesiumQualcommAmazon

Write a program to do basic string compression. For a character which is consecutively repeated more than once, replace consecutive duplicate occurrences with the count of repetitions.

Example:
If a string has 'x' repeated 5 times, replace this "xxxxx" with "x5".
The string is compressed only when the repeated character count is more than 1.
Note:
Consecutive count of every character in the input string is less than or equal to 9. You are not required to print anything. It has already been taken care of. Just implement the given function and return the compressed string.
Problem approach

Step 1 : Read the question properly. 
Step 2 : Discussing my approach with the interviewer using 2 pointers
Step 3 : Wrote a pseudo code and dry run with it.
Step 4 : Finally wrote a proper code and all the test cases were passing

Try solving now

2. Operating System Question

What are semaphores?

03
Round
Medium
Face to Face
Duration60 minutes
Interview date19 Aug 2021
Coding problem2

Interview based on projects and CSE fundamentals. Two interviewers were there, they asked me question on my projects and all the different types of sorting algorithms and asked to code Merge sort.

1. DBMS Question

Asked lots of core concepts of DBMS, that I used in my project especially triggers and concurrency control. and other fundamentals of computer science.

Problem approach

Tip 1: Strong with your CSE fundamentals

2. Merge Sort

Easy
15m average time
85% success
0/40
Asked in companies
Media.netHewlett Packard EnterpriseIBM

Given a sequence of numbers ‘ARR’. Your task is to return a sorted sequence of ‘ARR’ in non-descending order with help of the merge sort algorithm.

Example :

Merge Sort Algorithm -

Merge sort is a Divide and Conquer based Algorithm. It divides the input array into two-parts, until the size of the input array is not ‘1’. In the return part, it will merge two sorted arrays a return a whole merged sorted array.

subsequence

The above illustrates shows how merge sort works.
Note :
It is compulsory to use the ‘Merge Sort’ algorithm.
Try solving now
04
Round
Easy
HR Round
Duration10 minutes
Interview date19 Aug 2021
Coding problem1

Asked about my location of work and the role that I would like to work on.

1. Basic HR questions

Asked me to explain my project in simple language and how would I teach Bit coin to 5th class students, since I mention coin collection in my hobby and love teaching.

Problem approach

Tip 1 : Don't lie on a resume
Tip 2 : Maintain a smile on your face

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 recursion?

Choose another skill to practice
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