Seven Tech Solutions Golang Developer Interview Questions and Answers

Round duration - 90 Minutes
Round difficulty - Medium

2 coding questions and 20 mcq
 

Q1. 
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...read more
Ans. 
Find the minimum time required to rot all fresh oranges in a grid.
• Use Breadth First Search (BFS) to simulate the rotting process.

• Track the time taken to rot all oranges and return -1 if any fresh oranges remain.

• Handle edge cases like no fresh oranges or all oranges already rotten.

• Consider using a queue to efficiently process adjacent oranges.

• Ensure to update the grid with the new state of oranges after each second.
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Q2. 
Calculate Sum of Proper Divisors
Given a natural number N, return the sum of all its proper divisors.
A proper divisor of Y is defined as a number X such that X < Y and Y % X = 0.
Example:
Input:
T...read more
Ans. 
Calculate the sum of proper divisors of a given natural number.
• Iterate from 1 to sqrt(N) and check for divisors

• If a divisor is found, add it to the sum and also add N/divisor if it is not the same as divisor

• Return the sum as the result
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Round duration - 45 Minutes
Round difficulty - Medium

Technical interview

Q1. 
Rearrange Array to Form Largest Number
Given an array ARR consisting of non-negative integers, rearrange the numbers to form the largest possible number. The digits within each number cannot be changed.
...read more
Ans. 
Rearrange the array elements to form the largest possible number by concatenating them.
• Sort the array elements in a custom comparator function to get the largest number.

• Convert the sorted array elements to strings and concatenate them to form the final number.

• Handle cases where the numbers have the same prefix by comparing the concatenated forms.
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Aptitude consists of general thinking, pseudo code, and game aptitude

Q1. Resume mentioned technologies are going to ask you in the interview.
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Q2. Any knowledge about web technologies and questions on Angular, JavaScript and java.
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Q3. How would you manage your team. If you are on leave and you don't find any network to connect with them.
Ans. 
Delegate responsibilities and establish clear communication channels for team members to handle situations in my absence.
• Assign clear roles and responsibilities to each team member

• Establish communication channels and protocols for emergencies

• Ensure team members have access to necessary resources and information

• Provide training and support to team members to handle unexpected situations

• Regularly check in with team membe...read more
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Round duration - 45 minutes
Round difficulty - Hard

All mcqs should answer with in time limit should have a lot of practice to solve in exam

Q1. 
Water Jug Problem Statement
You have two water jugs with capacities X and Y liters respectively, both initially empty. You also have an infinite water supply. The goal is to determine if it is possible to...read more
Ans. 
The Water Jug Problem involves determining if a specific amount of water can be measured using two jugs of different capacities.
• Start by considering the constraints and limitations of the problem.

• Think about how the operations allowed can be used to reach the target measurement.

• Consider different scenarios and test cases to come up with a solution.

• Implement a function that takes the capacities of the jugs and the targe...read more
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Round duration - 60 minutes
Round difficulty - Easy

Easy and just basic questions very easy round

Q1. 
Matrix Multiplication Task
Given two sparse matrices MAT1 and MAT2 of integers with dimensions 'N' x 'M' and 'M' x 'P' respectively, the goal is to determine the resulting matrix produced by their multipl...read more
Ans. 
Implement a function to multiply two sparse matrices and return the resulting matrix.
• Create a function that takes two sparse matrices as input and returns the resulting matrix after multiplication.

• Iterate through the non-zero elements of the matrices to perform the multiplication efficiently.

• Ensure to handle the sparse nature of the matrices to optimize the multiplication process.

• Consider the constraints provided to en...read more
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