Qualcomm interview experience Real time questions & tips from candidates to crack your interview
Associate Technology
Qualcomm
3 rounds | 4 Coding
problems
Rejected
Interview preparation journey
Preparation
Duration: 3 months
Topics: Data Structures, C Programming, Aptitude, Signals and System, Embedded Systems, Digital Electronics, Communication and Wireless Systems
Tip 1 : Always check online for programming topics frequently asked in Qualcomm interviews and practice them accordingly (Linked List, Stack, and Queue to be kept on priority).
Tip 2 : Make sure to be very good in at least one programming language (Excluding Python)
Tip 3 : Go through all your projects in depth which you might have done in past.
Application process
Where: Campus
Eligibility: Above 7 CGPA
Tip 1 : Always keep your resume precise and avoid mentioning everything you know. Always try to add those topics and skills in your resume in which you are very confident (as in an interview they might grill you on those topics).
Tip 2 : Select only 2-3 major projects to add, which will justify your skillset, which you might have added in your resume under the skills section.
Interview rounds
01
Round
Medium
Online Coding Interview
Duration90 minutes
Interview date10 May 2021
Coding problem1
It round started at around 8 in the morning.
The environment was good.
The test was online, which has sections
Section 1: Aptitude
Section 2: C Programming MCQs
Section 3: Core ECE
Time is of importance. I suggest you quickly browse through all the questions and pick the easy ones beforehand instead of being stuck on a single difficult question.
1. Output based Question
What is the output of following program?
# include
void func(int a){
a = 30;
}
int main(){
int b = 20;
func(b);
printf("%d", b);
return 0;
}
Option 1: 20Option 2: 30Option 3: compile error Option 4: runtime error
Problem approach
This was an output-based question asked in the C Programming section.
This was an easy question but tricky as well. If you are not clear with C basics.
In this question value of b is pass by value to "func" and hence any local change will not affect the passed value of b in the main function. So the correct answer is Option 1: 20.
02
Round
Medium
HR Round
Duration30 minutes
Interview date10 May 2021
Coding problem2
The timing was around 11 in the morning.
The second round for me was the HR round and for some people, the second round was the technical round.
1. Basic HR Question
Tell me something about yourself.
Problem approach
Tip 1 : Don't start with your name as they already know that.
Tip 2 : Always go slow do not be in a hurry.
Tip 3 : try to include those things as well which are not present in your CV as they already have you CV they have already gone through it.
2. Basic HR Question
Why do you want to join Qualcomm?
Problem approach
Tip 1 : Try to be honest without giving some hypothetical answers.
Tip 2 : You can tell them how interested you are in how Qualcomm has maintained its repo in chip manufacturing industries and how it is the first to develop the 5G chips for mobile phones.
03
Round
Hard
Online Coding Test
Duration90 minutes
Interview date10 May 2021
Coding problem1
The timing was around 2 in the noon.
This was the third round which is a coding round.
They have given 2 questions to code.
1. Detect and Remove Loop
Moderate
10m average time
90% success
0/80
Asked in companies
Given a singly linked list, you have to detect the loop and remove the loop from the linked list, if present. You have to make changes in the given linked list itself and return the updated linked list.
Expected Complexity: Try doing it in O(n) time complexity and O(1) space complexity. Here, n is the number of nodes in the linked list.
Problem approach
It is realized that Floyd's Cycle recognition calculation ends when quick and slow pointers meet at a typical point. This normal point is otherwise called one of the loop nodes. Store the location of this normal point in a pointer variable, say (ptr). Then, at that point, introduce a counter with 1 and begin from the common point, and continues to visit the following node and increase the counter till the common pointer is reached once more.
By then, the counter value will be equivalent to the length of the loop.
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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