RedQuanta Interview Questions and Answers

20 mcq questions and 3 programming questions

Q1. Progrmas on the linked list
Ans. 
Linked list programs involve creating, traversing, inserting, and deleting nodes in a linked list data structure.
• Create a linked list by defining a node struct and using pointers to link them together

• Traverse the linked list using a while loop and a pointer to the current node

• Insert a node by creating a new node, updating pointers, and handling edge cases

• Delete a node by updating pointers and freeing memory

• Examples: re...read more
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Q2. 1 to 1 round with some questions on linked list and arrays
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Moderate Coding question

Q1. On Java, OOPS concepts and coding logics
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Q2. Data Structures and algorithms
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Q1. Mostly the same as Round 1
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Q2. But question complexity is increased
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Q1. Normal questions about us
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Q2. Nothing major as I remember
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Hackerrank coding test

Q1. Is the String anagram or not
Ans. 
Check if a given string is an anagram of another string
• Compare the sorted characters of both strings

• Check if the character counts are the same in both strings

• Examples: 'listen' and 'silent' are anagrams, 'hello' and 'world' are not
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Q2. Occurence of letters in a string
Ans. 
Count the occurrence of each letter in a given string.
• Create an array to store the count of each letter

• Iterate through the string and increment the count of each letter in the array

• Return the array with the count of each letter
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It was a leetcode medium

It was a leetcode medium

Round duration - 55 Minutes
Round difficulty - Easy

Timing - evening
Interviewer was friendly.

Q1. 
Number of Islands Problem Statement
You are provided with a 2-dimensional matrix having N rows and M columns, containing only 1s (land) and 0s (water). Your goal is to determine the number of islands in t...read more
Ans. 
Count the number of islands in a 2D matrix of 1s and 0s.
• Iterate through the matrix and perform depth-first search (DFS) to find connected 1s.

• Mark visited cells to avoid redundant calculations.

• Increment island count whenever a new island is encountered.
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Round duration - 55 Minutes
Round difficulty - Easy

Timing - afternoon
Interviewer was friendly

Q1. 
Move Zeroes to End
Given an unsorted array of integers, rearrange the elements such that all the zeroes are moved to the end, while maintaining the order of non-zero elements.
Input:
The first line cont...read more
Ans. 
Given an unsorted array of integers, move all zeroes to the end while maintaining the order of non-zero elements.
• Iterate through the array and maintain two pointers, one for the current position and one for the position to swap with.

• If the current element is non-zero, swap it with the element at the swap pointer and increment the swap pointer.

• After iterating through the array, fill the remaining positions with zeroes.

• E...read more
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Q2. 
Asteroid Collision Problem Description
Given an array/list ASTEROIDS representing asteroids aligned in a row, each element's absolute value identifies the asteroid's size, while its sign indicates the dir...read more
Ans. 
Determine the state of asteroids after collisions occur in a row.
• Iterate through the array of asteroids and simulate collisions between adjacent asteroids moving in opposite directions.

• If two asteroids collide, the larger one survives while the smaller one is destroyed.

• Continue this process until no more collisions can occur.

• Return the array of remaining asteroids after all collisions have been resolved.
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Round duration - 55 Minutes
Round difficulty - Easy

Timing - evening
interviewer was friendly

Q1. Discussion on sales, areas and target
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Q1. Discussion about product, target etc
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DSA questions asked in an interview

Q1. Languages known
Ans. 
I am fluent in English, Spanish, and French.
• English

• Spanish

• French
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Problem solving approach check

Q1. Case study and problem solving
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Q2. Root cause Analysis
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