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Qualcomm Full Stack Developer Interview Questions and Answers
Qualcomm Full Stack Developer Interview Experiences
1 interview found
(4 Questions)
- Q1. Tell me about your self?
- Q2. What is oops in javascript?
- Ans.
Object-oriented programming concepts in JavaScript.
Encapsulation: Bundling data and methods that operate on the data into a single unit.
Inheritance: Objects can inherit properties and methods from other objects.
Polymorphism: Objects can share the same interface but have different implementations.
- Q3. What is props in react js?
- Ans.
Props in React JS are read-only properties that are passed from parent components to child components.
Props allow you to pass data from a parent component to a child component.
Props are immutable and cannot be changed by the child component.
Props are accessed in the child component using this.props.
Example:
where 'name' is a prop passed from the parent component.
- Q4. Props in react js?
- Ans.
Props in React JS are used to pass data from parent components to child components.
Props are read-only and cannot be modified by the child component.
Props are passed down the component tree using custom attributes.
Props help in creating reusable components by passing dynamic data.
Example:
Skills evaluated in this interview
Interview questions from similar companies
Software Developer Interview Questions & Answers
Cadence Design Systems
Anonymous
posted on 10 May 2015
Interview Questionnaire
9 Questions
- Q1. Tree questions related like traversal?
- Q2. Locate the sum of 2 numbers in a linear array (Unsorted and sorted) and their complexities
- Ans.
Locate sum of 2 numbers in a linear array (unsorted and sorted) and their complexities
For unsorted array, use nested loops to compare each element with every other element until the sum is found
For sorted array, use two pointers approach starting from the beginning and end of the array and move them towards each other until the sum is found
Complexity for unsorted array is O(n^2) and for sorted array is O(n)
- Q3. Pointers with increment/decrement, address of and value at operators (++,–,*,&)
- Ans.
Pointers are used to manipulate memory addresses and values in C++. Increment/decrement, address of and value at operators are commonly used.
Incrementing a pointer moves it to the next memory location of the same data type
Decrementing a pointer moves it to the previous memory location of the same data type
The address of operator (&) returns the memory address of a variable
The value at operator (*) returns the value sto...
- Q4. A point and a rectangle is present with the given coordinates. How will you determine whether the point is inside or outside the rectangle?
- Ans.
To determine if a point is inside or outside a rectangle, we check if the point's coordinates fall within the rectangle's boundaries.
Check if the point's x-coordinate is greater than the left edge of the rectangle
Check if the point's x-coordinate is less than the right edge of the rectangle
Check if the point's y-coordinate is greater than the top edge of the rectangle
Check if the point's y-coordinate is less than the b...
- Q5. There is a point inside the rectangle. How will you determine the line that passes through the point and divides the rectangle into 2 equal halves?
- Ans.
To find line that divides rectangle into 2 equal halves through a point inside it.
Find the center of the rectangle
Draw a line from the center to the given point
Extend the line to the opposite side of the rectangle
The extended line will divide the rectangle into 2 equal halves
- Q6. There is a scheme which contains 8-bit and 16-bit signed numbers. How many such combinations are possible?
- Ans.
There are multiple combinations of 8-bit and 16-bit signed numbers. How many such combinations are possible?
There are 2^8 (256) possible combinations of 8-bit signed numbers.
There are 2^16 (65,536) possible combinations of 16-bit signed numbers.
To find the total number of combinations, we can add the number of combinations of 8-bit and 16-bit signed numbers.
Therefore, the total number of possible combinations is 256 + ...
- Q7. You are given an array of elements. Some/all of them are duplicates. Find them in 0(n) time and 0(1) space. Property of inputs – Number are in the range of 1..n where n is the limit of the array
- Ans.
Find duplicates in an array of elements in 0(n) time and 0(1) space.
Use the property of inputs to your advantage
Iterate through the array and mark elements as negative
If an element is already negative, it is a duplicate
Return all the negative elements as duplicates
- Q8. Given a array of digits. print all combination of of these i.e all no formed by these. repetition allowed. and then repetition not allowed example: i/p: arr={1,2,3} o/p: (without repetition) 123, 132, 213,...
- Ans.
Generate all combinations of digits from an array, allowing and disallowing repetition.
Use recursion or backtracking to generate combinations.
For repetition allowed: e.g., arr={1,2}, combinations are 11, 12, 21, 22.
For repetition not allowed: e.g., arr={1,2,3}, combinations are 123, 132, 213, 231, 312, 321.
Utilize a set to track used digits when repetition is not allowed.
- Q9. Questions on project
Interview Preparation Tips
Duration: 90 minutes
Total Questions: 3
Round: HR Interview
Experience: HR interview was all about my projects, my background and a few more typical HR questions. It was pretty easy to answer them.
Skills: Algorithm, Data structure, C++
College Name: IIT ROORKEE
Skills evaluated in this interview
I appeared for an interview before May 2016.
Interview Preparation Tips
Experience: it was elitmus test conducted by the company itself on campus. As per my knowledge only those scoring 90 percentile got selected for round 2.
Tips: Attempt only those ques that are necessary for scoring 90+ in e litmus. Specially in verbal don't attempt more then required questions, though you might be tempted. The aim is not to score max bt to score 90+
Round: Technical Interview
Experience: This was a programming based round. I was asked to write algorithms for various array linked list based problems. There was cross questioning prompting to reduce complexity and to use different data structures for same problems.
Mostly it focused on subjects like c, data structures and ADA.
Tips: Be clear with basic of data structures and algorithms. Pointers, queue, stacks, array linked lists, sorting etc are the keywords.
Round: Technical Interview
Experience: This was a information security specific round since that was my major. In depth cross questioning on my thesis topics, honeypots, network intrusion etc. Security certificates, and on the go problems to provide security solution layer wise in different scenarios. Security concept of torrents was also asked in detail.
Tips: It was more of a security discussion and throwing of ideas about how things in a particular case could work or could not. Don't worry about right or wrong answer just be clear with your reasoning about the solution you are suggesting.
Round: Other Interview
Experience: I don't know what to name this round, but it focused mainly on developing test cases for an object. Say they gave me a stapler and said to develop a test plan listing down test cases for a given object to pass so that it can be confirmed that it is a stapler. Another scenario was with a lift.
Tips: This is one round where your presence of mind and inter personal skills matter. I think the way you present your thoughts was most important here.
Round: Behavioural Interview
Experience: This was was mostly about how would you react in a given professional situation
Like your assigned work could not be completed on time, or if you are doing something wrong with the work assigned.
Tips: This is all about inter personal skills and putting your best foot forward :)
College Name: Indira Gandhi Delhi Technical University For Women, Delhi
I appeared for an interview before Sep 2020.
(1 Question)
Round duration - 45 minutes
Round difficulty - Medium
Its a zoom call interview which lasted for 45 minutes. initially there are two panel members in which one is very targetting at me. They asked me different type of questions like jumping from DSA to project then to python then again java. Its a mixed combo pack type interview. for each and every question they asked me the real time example. The discussion on my project lasted for 15-20 mins.
- Q1.
Count Set Bits Problem Statement
Given a positive integer
N, compute the total number of '1's in the binary representation of all numbers from 1 to N. Return this count modulo 1e9+7 because the result can... - Ans.
Count the total number of set bits in the binary representation of numbers from 1 to N modulo 1e9+7.
Use bitwise operations to count the set bits in each number from 1 to N.
Keep track of the total set bits and return the result modulo 1e9+7.
Optimize the solution to handle large values of N efficiently.
Consider using dynamic programming or precomputing values for faster computation.
Round duration - 30 mins
Round difficulty - Easy
This round was a zoom interview. The interview started with my brief introduction. This time the interview was more interested in my hobbies and passions. He asked me what do you do to keep yourself updated with the latest technology trends?
Interview Preparation Tips
Tip 1 : Do participate in all the coding contests, long challenges held by codechef, codeforces
Tip 2 : Practice all kinds of problems on leetcode, gfg, coding ninjas
Tip 3 : When you are writing a written exam for a particular company, make sure you get to know about the company in detail.
Tip 1 : Make your resume short and sweet(mostly 1 page, max 2 pages) is preferred.
Tip 2 : Make sure your resume is crisp rather than descriptive
Tip 3 : Do not lie on your resume
Skills evaluated in this interview
What people are saying about Qualcomm
Selected
I applied via Job Portal and was interviewed before Mar 2023. There were 3 interview rounds.
ZeroOddEven program will always be asked
(1 Question)
- Q1. Basic java questions , some coding questions around threads
(1 Question)
- Q1. Its just about salary and why you want to join and all
I applied via Naukri.com and was interviewed in Aug 2022. There were 2 interview rounds.
(1 Question)
- Q1. Views, sp's, functions,joins,temp tables,table variables, indexes,cte,subquery,derived tables, correlated subquery, constrains and types , find n th highest salary, find out duplicates ,delete duplicates ,...
(1 Question)
- Q1. Current organization, product based or contractual based, current sal, expect salary, which domain, notice period..etc
Interview Preparation Tips
- SQL Server
- Tsql
- Data Warehousing
I applied via Campus Placement and was interviewed in Aug 2024. There were 2 interview rounds.
Its basically a test comprising 32 mcq
12- logical reasoning
20- core C,DBMS, OS , Computer Networks
2 coding Questions
(2 Questions)
- Q1. He just Gave me to design a React Page and removed all the starting code and gave me blank folder and asked to code all by myself
- Q2. He asked me SQL queries which was quite tough as its of nested queries
I applied via Referral and was interviewed before Nov 2023. There were 2 interview rounds.
Frog jump dp problem
(2 Questions)
- Q1. Microservices, Kubernetes
- Q2. Rbac and access control
Software Developer Interview Questions & Answers
Advanced Micro Devices
Anonymous
posted on 27 Feb 2023
I applied via Recruitment Consulltant and was interviewed in Aug 2022. There were 3 interview rounds.
Basic aptitude, c and data structures
(2 Questions)
- Q1. C and data structures
- Q2. Operating system and puzzle
Interview Preparation Tips
Some basics on OS
(2 Questions)
- Q1. What is normalization
- Ans.
Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
Normalization is used to eliminate data redundancy by breaking up tables into smaller, related tables.
It helps in reducing data anomalies such as insertion, update, and deletion anomalies.
Normalization is achieved through a series of stages called normal forms, with the most common being First Normal Form (1NF)...
- Q2. Code for armstrong alogrithm
- Ans.
Armstrong algorithm is used to find Armstrong numbers in a given range.
Iterate through the numbers in the given range
Calculate the sum of cubes of each digit in the number
Check if the sum is equal to the original number
Skills evaluated in this interview
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