Qualitrix Technologies Product Manager Interview Questions and Answers

Q1. Questions Regarding Studies and Overall Experience so far.
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Q2. Logical Reasoning Questions
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Round duration - 50 minutes
Round difficulty - Medium

Round duration - 20 minutes
Round difficulty - Medium

Q1. 
Pair Sum Problem Statement
You are given an integer array 'ARR' of size 'N' and an integer 'S'. Your task is to find and return a list of all pairs of elements where each sum of a pair equals 'S'.
Note:
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Ans. 
Given an array and a target sum, find pairs of elements that add up to the target sum.
• Iterate through the array and for each element, check if the complement (target sum - current element) exists in a hash set.

• If the complement exists, add the pair to the result list. Otherwise, add the current element to the hash set.

• Sort the pairs based on the first element and then the second element to meet the required output form
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Round duration - 20 minutes
Round difficulty - Easy

Round duration - 40 minutes
Round difficulty - Hard

Q1. Can you provide an example of how to use pointers in C/C++ and discuss different concepts related to them?
Ans. 
Pointers in C/C++ are variables that store memory addresses. They are used to manipulate memory directly and improve performance.
• Pointers are declared using an asterisk (*) before the variable name.

• Pointers can be used to dynamically allocate memory using functions like malloc() and free().

• Pointers can be used to pass variables by reference to functions.
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Prime number and reverse a string

Q1. What is digital signature
Ans. 
A digital signature is a mathematical technique used to verify the authenticity and integrity of a digital document or message.
• It is a type of electronic signature that uses encryption to ensure the validity of a document or message.

• It provides a way to verify the identity of the signer and detect any changes made to the document or message.

• Digital signatures are commonly used in e-commerce, online contracts, and other...read more
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