Springworks Software Developer Intern Interview Questions, Process, and Tips

Some Objective questions and 1 Coding Questions

Q1. Situation based questions on Coroutines
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Q2. About Project Tech Stack Used and Questions on that
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Round duration - 120 Minutes
Round difficulty - Medium

Q1. 
Inorder Traversal of Binary Tree
You are provided with a Binary Tree composed of 'N' nodes, each holding integer values. Your task is to compute the Inorder traversal of this binary tree.
Example:
For t...read more
Ans. 
The task is to find the in-order traversal of a given binary tree.
• Implement a recursive function to perform in-order traversal of the binary tree

• Start from the left subtree, then visit the root node, and finally visit the right subtree

• Use an array to store the values of the nodes in the in-order traversal
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Round duration - 50 minutes
Round difficulty - Medium

Interview on google meet

Q1. Given two tables, how would you return an inner join on a common column (key)?
Ans. 
The inner join operation combines rows from two tables based on a common column (key).
• Use the JOIN keyword in the SQL query to perform an inner join.

• Specify the common column (key) in the ON clause of the join.

• The result will contain only the matching rows from both tables.
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Round duration - 50 minutes
Round difficulty - Medium

Q1. 
Search in a Row-wise and Column-wise Sorted Matrix Problem Statement
You are given an N * N matrix of integers where each row and each column is sorted in increasing order. Your task is to find the positi...read more
Ans. 
Given a sorted matrix, find the position of a target integer in the matrix.
• Iterate through each row and column of the matrix

• Compare the target integer with the current element

• If the target integer is found, return the position

• If the target integer is not found, return {-1, -1}
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Round duration - 3 Hours
Round difficulty - Hard

3 Coding questions ( 1 medium graph dfs based question , 2 hard level prefix array question ans 3 was a hard question which I don't remember)

2 Database question ( It mostly includes joining 2-3 tables and then you would be able to solve it)

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.
• Use Depth First Search (DFS) or Breadth First Search (BFS) to traverse the matrix and identify connected groups of 1s.

• Maintain a visited array to keep track of visited cells to avoid counting the same island multiple times.

• Increment the island count each time a new island is encountered during traversal.

• Consider edge cases such as when the matrix is empty or when
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Q2. 
Maximum Product Subarray Problem Statement
Given an array of integers, determine the contiguous subarray that produces the maximum product of its elements.
Explanation:
A subarray can be derived from th...read more
Ans. 
Find the contiguous subarray with the maximum product of elements in an array.
• Iterate through the array and keep track of the maximum and minimum product ending at each index.

• Update the maximum product by taking the maximum of current element, current element * previous maximum, and current element * previous minimum.

• Update the minimum product by taking the minimum of current element, current element * previous maximum...read more
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Q3. You were given 3-4 models in a DBMS context. How did you join those models to obtain the desired result?
Ans. 
To join multiple models in a DBMS, use SQL JOIN statements based on common keys.
• Identify common keys between the models

• Use SQL JOIN statements (INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN) to combine the models based on the common keys

• Specify the columns to be selected in the SELECT statement
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Round duration - 30 minutes
Round difficulty - Medium

These rounds depends on the type of interviewer.
My friends were asked questions from DSA but from me they asked a lot of questions on Node.JS and React.

Round duration - 30 Minutes
Round difficulty - Medium

This round depends on your interviewer.
My colleagues were asked questions from DS but my interviewer focused just on javascript.

Round duration - 45 minutes
Round difficulty - Easy

It was a managerial round they will test your communication and how well do you handle situations in your life

Q1. What is one of the most challenging situations you have faced in your life, and how did you handle it?
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Round duration - 90 minutes
Round difficulty - Medium

3 DSA questions, 2 SQL questions
On the DoSelect platform, which was good

Q1. 
Matrix Chain Multiplication Problem
Given 'N' 2-dimensional matrices and an array ARR of length N + 1, where the first N integers denote the number of rows in each matrix and the last integer represents t...read more
Ans. 
The task is to find the minimum number of multiplication operations required to multiply a series of matrices together.
• Use dynamic programming to solve the problem efficiently.

• Create a 2D array to store the minimum number of operations needed to multiply matrices.

• Iterate through different combinations of matrices to find the optimal solution.

• Consider the dimensions of matrices and their compatibility for multiplication...read more
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Q2. 
Linear Probing in Hashing
Hashing is a technique to map large non-negative integers to smaller indices using a hash function. In the context of collision resolution in hash tables, 'Linear Probing' is emp...read more
Ans. 
Linear Probing in Hashing is a technique to resolve collisions in hash tables by linearly searching for the next available slot.
• Implement a function that takes an array of non-negative integers and returns the corresponding hash table using linear probing.

• Use the given hash function H(X) = X mod N to map elements to indices in the hash table.

• Handle collisions by linearly probing for the next available slot in the hash ...read more
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Round duration - 60 minutes
Round difficulty - Easy

Started off with introductions and projects related questions.
Basic javascript and CSS property-related questions.
An easy DSA question

Q1. 
Pair Sum Problem Statement
You are given an array of integers 'ARR' with a length 'N' and a specific integer 'Target'. Your objective is to determine and return all pairs of elements within the array whos...read more
Ans. 
Given an array of integers and a target sum, find pairs of elements that add up to the target.
• Iterate through the array and for each element, check if the complement (target - current element) exists in a hash set.

• If the complement exists, add the pair to the result. If not, add the current element to the hash set.

• Handle edge cases like duplicates and negative numbers appropriately.

• Return pairs in any order as (a, b) o
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Round duration - 45 minutes
Round difficulty - Easy

Introduction and two easy to medium DSA questions

Q1. 
Implementing Queue with Two Stacks
Your task is to implement a queue using two stacks. You are provided with ‘Q’ queries and need to handle them, where each query falls under one of these two operations:
...read more
Ans. 
Implement a queue using two stacks with enqueue and dequeue operations.
• Use two stacks to simulate a queue - one for enqueue and one for dequeue.

• For enqueue operation, push elements onto the enqueue stack.

• For dequeue operation, if dequeue stack is empty, pop all elements from enqueue stack and push onto dequeue stack.

• Return true for successful enqueue and -1 for empty dequeue.

• Example: Enqueue 10, enqueue 20, dequeue (re
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Q2. 
Roman Numeral to Integer Conversion
Convert a string representing a Roman numeral into its integer equivalent and return the result.
Explanation:
Roman numerals are represented by seven different symbol...read more
Ans. 
Convert a Roman numeral string to its integer equivalent.
• Create a mapping of Roman numeral symbols to their integer values.

• Iterate through the input string and add the corresponding integer values.

• Handle cases where a smaller value precedes a larger value (e.g., IV = 4).
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