Concerto Software Systems C Developer Interview Questions and Answers

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:
...read more
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
Answered by AI
Add your answer

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.
Answered by AI
Add your answer

Q1. Oops concepts, core java
Add your answer
Q2. Java 8 stream api and lambda
Add your answer

Mcq + dsa JavaScript questions

Q1. JavaScript advance topics and database design topics
Add your answer

Q1. Situation based question and behavioural questions
Add your answer

Q1. Print unique numbers in list
Ans. 
Print unique numbers in list
• Iterate through the list and store each number in a set to keep track of unique numbers

• Print out the numbers in the set to display the unique numbers
Answered by AI
Add your answer

2 questions of DSA medium to hard

Q1. Closures, hostings, react js, redux, hooks basic
Add your answer
Q2. Html5, css3, basic javascript stuff
Add your answer