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HackerRank Backend Developer Intern Interview Questions and Answers

Updated 4 Dec 2024

HackerRank Backend Developer Intern Interview Experiences

1 interview found

Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
Not Selected

I applied via Approached by Company and was interviewed in Nov 2024. There was 1 interview round.

Round 1 - One-on-one 

(2 Questions)

  • Q1. What are your projects
  • Q2. Why you want to join hackerrank

Interview Preparation Tips

Interview preparation tips for other job seekers - You never know what went wrong

Interview questions from similar companies

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Jan 2024. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Oops? .net core features
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Recruitment Consulltant and was interviewed before May 2023. There were 4 interview rounds.

Round 1 - Coding Test 

Coding was hard conducted on the platform called interview.io

Round 2 - Coding Test 

Consits of 2 q 1 is Dp, and the other is Graph

Round 3 - Aptitude Test 

Bit harder compared to other companies

Round 4 - Aptitude Test 

Reasoning like questions

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

It was an easy online test

Round 2 - Coding Test 

Question relates to graph like minimum spanning tree,hashing questiond

Round 3 - HR 

(1 Question)

  • Q1. Projects related to questions
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Campus Placement and was interviewed in Apr 2024. There were 2 interview rounds.

Round 1 - Coding Test 

On hacker rank , included subjects like DBMS , OS and coding questions on priority queue

Round 2 - Technical 

(2 Questions)

  • Q1. Questions on OOPS
  • Q2. One DSA question on HashMap
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

2 DSA questions Both are from DP

Round 2 - Technical 

(2 Questions)

  • Q1. 2 Questions , 1 is DSA
  • Q2. Second question is Puzzle

Interview Preparation Tips

Interview preparation tips for other job seekers - Practise DSA more and give more and more interviews.
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via AmbitionBox

Round 1 - Coding Test 

Java, spring,springboot

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Angular pipes, customization in angular
  • Q2. CDN, SSR, SSG questions
Round 2 - Coding Test 

Find duplicates in an array

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-

I applied via Campus Placement

Round 1 - Aptitude Test 

Aptitude questions with 2-3 coding questions

Round 2 - Technical 

(2 Questions)

  • Q1. Input-wwwrrrrttttuu Output - w3r4t4u2
  • Q2. Interpreter vs compiler
  • Ans. 

    Interpreter executes code line by line, compiler translates code into machine code before execution.

    • Interpreter translates code into machine code line by line during runtime

    • Compiler translates code into machine code before execution

    • Interpreted languages include Python, JavaScript

    • Compiled languages include C, C++

  • Answered by AI

I appeared for an interview in Jan 2021.

Round 1 - Coding Test 

(3 Questions)

Round duration - 120 minutes
Round difficulty - Hard

This round was very difficult. I never do these much difficulty level of coding questions. But i give my best, and just do every questions by using step by step process.

  • Q1. 

    Hourglass Pattern Problem Statement

    Given an integer 'N', print an hourglass pattern based on the value of 'N'.

    Input:

    The first and only line of input contains an integer, denoting the value of N.

    Out...

  • Ans. 

    Print an hourglass pattern based on the given integer 'N'.

    • Read the integer 'N' as input

    • Print the top half of the hourglass pattern with decreasing numbers

    • Print the bottom half of the hourglass pattern with increasing numbers

    • Handle the constraints for 'N' values between 1 and 50

  • Answered by AI
  • Q2. 

    BFS Traversal in a Graph

    Given an undirected and disconnected graph G(V, E) where V vertices are numbered from 0 to V-1, and E represents edges, your task is to output the BFS traversal starting from the ...

  • Ans. 

    BFS traversal in a disconnected graph starting from vertex 0.

    • Use BFS algorithm to traverse the graph starting from vertex 0.

    • Explore neighbor nodes first before moving to the next level neighbors.

    • Consider bidirectional edges in an undirected graph.

    • Output the BFS traversal sequence for each test case in a separate line.

    • Ensure the BFS path starts from vertex 0 and print connected nodes in numerical sort order.

  • Answered by AI
  • Q3. 

    Sort a Stack Problem Statement

    You are given a stack. Your task is to sort the elements within the stack in ascending order using only push and pop operations. You are allowed to use one additional stack ...

  • Ans. 

    Sort a given stack in ascending order using only push and pop operations with the help of an additional stack.

    • Use one additional stack to assist in sorting the elements.

    • Pop elements from the input stack and push them onto the auxiliary stack in sorted order.

    • Keep track of the current minimum element to maintain ascending order.

    • Pop elements from the auxiliary stack back to the input stack to get the sorted order.

  • Answered by AI
Round 2 - Coding Test 

(2 Questions)

Round duration - 90 minutes
Round difficulty - Easy

This round is also coding round in this round we have a small video call interaction too, in which hr ask few questions to only those whose coding question is correct.

  • Q1. 

    Next Smaller Palindrome Problem Statement

    You are given a palindrome number represented as a string S. Your task is to find the largest palindrome number that is strictly less than S.

    Example:

    Input:
    T...
  • Ans. 

    Find the largest palindrome number strictly less than a given palindrome number.

    • Iterate from the middle towards the start of the number and decrement the digits to create the largest palindrome less than the given number.

    • Handle cases where the number is all '9's by changing the middle digit to '9' and decrementing the rest of the digits.

    • If the number has an odd length, simply mirror the first half to create the largest

  • Answered by AI
  • Q2. 

    Rotting Oranges Problem Statement

    You are given a grid containing oranges where each cell of the grid can contain one of the three integer values:

    • 0 - representing an empty cell
    • 1 - representing a fre...
  • Ans. 

    Find minimum time to rot all fresh oranges adjacent to rotten oranges in a grid.

    • Use Breadth First Search (BFS) to simulate the rotting process.

    • Track the time taken to rot all fresh oranges.

    • Return -1 if all fresh oranges cannot be rotten.

    • Handle edge cases like empty grid or no fresh oranges.

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI applied for the job as Software Development in GurgaonEligibility criteriaAbove 7 cgpaZIGRAM interview preparation:Topics to prepare for the interview - OOPS , Data Structures, Dynamic Programming, Algorithms from variuos coding platforms , Database Management System, Operating System, Web developmentTime required to prepare for the interview - 2 monthInterview preparation tips for other job seekers

Tip 1 : Relax and don't stress. Practice
Tip 2 : Build Resume according to Job Description , but don't lie.
Tip 3 : Have good projects and knowledge regarding important subjects related to interviews

Application resume tips for other job seekers

Tip 1 : Include only genuine information, never lie in resume , it will impact to bad impression. 
Tip 2 : Skills relevant to Job Description
Tip 3 : Resume should not be more than 2 pages 
Tip 4 : Have some projects and internship on your resume because it will give good impression

Final outcome of the interviewSelected

Skills evaluated in this interview

HackerRank Interview FAQs

How many rounds are there in HackerRank Backend Developer Intern interview?
HackerRank interview process usually has 1 rounds. The most common rounds in the HackerRank interview process are One-on-one Round.
What are the top questions asked in HackerRank Backend Developer Intern interview?

Some of the top questions asked at the HackerRank Backend Developer Intern interview -

  1. Why you want to join hackerr...read more
  2. What are your proje...read more

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HackerRank Backend Developer Intern Interview Process

based on 1 interview

Interview experience

2
  
Poor
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