Darwinbox Sr. Content Specialist Interview Questions and Answers

Hacker rank test on Python, SQL and Aptitude , English

Q1. Technical from Hiring Manager
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Q2. How many Surf excel are consuming in Gurgaon area on daily basis Advance excel Questions. Python and SQL basics
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Q1. Technical -Senior Manager-Product Management
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Q1. HOD Product Management- 1: 1 Techno Managerial -
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Q1. Salary Discussion and Hr rounds -general question
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Focused more on Logics and DSA

Q1. Just with Formal Questions
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Round duration - 105 minutes
Round difficulty - Medium

There were 3 problems .
One was easy but the other two were of medium level.

Q1. 
Aggressive Cows Problem Statement
Given an array representing positions of stalls and an integer ‘K’ representing the number of aggressive cows, determine the largest minimum distance between any two cows ...read more
Ans. 
The problem requires assigning aggressive cows to stalls in a way that maximizes the minimum distance between any two cows.
• Sort the array of stall positions in ascending order.

• Use binary search to find the largest minimum distance between cows.

• Check if it is possible to assign cows with this minimum distance by iterating through the sorted array.

• If it is possible, update the maximum distance and continue binary search ...read more
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Q2. 
Shortest Path in an Unweighted Graph
The city of Ninjaland is represented as an unweighted graph with houses and roads. There are 'N' houses numbered 1 to 'N', connected by 'M' bidirectional roads. A road...read more
Ans. 
The problem is to find the shortest path between two houses in an unweighted graph.
• The graph represents the city of Ninjaland with houses connected by roads.

• The input consists of the number of test cases, number of houses and roads, starting and ending house, and the roads between houses.

• The output is a vector of nodes representing the shortest path from the starting house to the ending house.

• If there are multiple shor...read more
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Q3. 
Count Set Bits Problem Statement
Given a positive integer N, compute the total number of '1's in the binary representation of all numbers from 1 to N. Return this count modulo 1e9+7 because the result can...read more
Ans. 
The task is to count the total number of '1' in the binary representation of all numbers from 1 to N.
• Convert each number from 1 to N into its binary representation

• Count the number of '1' bits in each binary representation

• Sum up the counts of '1' bits for all numbers

• Return the sum modulo 1e9+7
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Round duration - 60 minutes
Round difficulty - Easy

The interviewer was very polite and straightforward. 
Firstly he introduced himself and then asked me to introduce myself and then he jumped to the coding problems.
After the coding problems, he asked some questions from the OS and DBMS.

Q1. 
Reverse Words in a String: Problem Statement
You are given a string of length N. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o...read more
Ans. 
The task is to reverse the words in a given string, removing any leading or trailing spaces and replacing multiple spaces between words with a single space.
• Split the string into words using spaces as delimiters

• Reverse the order of the words

• Join the reversed words with a single space between them

• Remove any leading or trailing spaces
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Q2. 
Reverse Linked List in Groups of K
You are provided with a linked list containing 'N' nodes and an integer 'K'. The task is to reverse the linked list in groups of size K, which means reversing the nodes ...read more
Ans. 
The task is to reverse a linked list in groups of size K.
• Iterate through the linked list in groups of size K

• Reverse each group using a helper function

• Connect the reversed groups to form the final reversed linked list
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Round duration - 60 minutes
Round difficulty - Medium

The interviewer was very polite and straightforward, firstly he introduce himself and then ask me to introduce myself and then ask some ques on my projects and then he jumps to the coding problems.

Q1. 
Remove Consecutive Duplicates From String Problem Statement
Given a string STR consisting of both lower and upper case characters, your task is to remove consecutive duplicate characters from the string a...read more
Ans. 
The task is to remove consecutive duplicate characters from a given string and return the new string.
• Iterate through the characters of the string

• Compare each character with the next character

• If they are the same, skip the next character

• If they are different, add the current character to the new string

• Return the new string
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Q2. 
Maximum Path Sum in a Matrix
Given an N*M matrix filled with integer numbers, determine the maximum sum that can be obtained from a path starting from any cell in the first row to any cell in the last row...read more
Ans. 
The question asks to find the maximum sum that can be obtained from a path starting from any cell in the first row to any cell in the last row of a given matrix.
• Iterate through each cell in the first row and calculate the maximum sum path ending at that cell

• For each cell, calculate the maximum sum path ending at that cell by considering the three possible directions

• Store the maximum sum path ending at each cell in a se...read more
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Q1. Excel realated questions and answers
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Q2. Vlookup working formula
Ans. 
Vlookup is a function in Excel used to search for a value in a table and return a corresponding value.
• Syntax: =VLOOKUP(lookup_value, table_array, col_index_num, [range_lookup])

• lookup_value: The value to search for in the first column of the table.

• table_array: The range of cells that contains the data.

• col_index_num: The column number in the table from which to retrieve the value.

• range_lookup: Optional. TRUE for approxim...read more
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Q3. H lookup formula
Ans. 
HLOOKUP is a function in Excel used to search for a value in the top row of a table and return a value in the same column from a specified row.
• HLOOKUP stands for Horizontal Lookup.

• It is used to search for a value in the top row of a table and return a value in the same column from a specified row.

• Syntax: =HLOOKUP(lookup_value, table_array, row_index_num, [range_lookup])

• Example: =HLOOKUP(123, A1:D4, 3, FALSE) will searc...read more
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Assignment 1 ,3 and 3

Payroll realated questions and answers

Round duration - 120 Minutes
Round difficulty - Easy

Q1. 
Rectangle Area Calculation
Given a list of rectangles, where each rectangle is represented by an array of four integers indicating its bottom-left and top-right corners, calculate the total area covered b...read more
Ans. 
Calculate total area covered by a list of rectangles on a plane.
• Iterate through each rectangle and calculate its area

• Check for overlapping areas between rectangles

• Sum up the total area covered by all rectangles
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Round duration - 60 Minutes
Round difficulty - Medium

Oops concepts and 1 DSA problem

Q1. 
Bit Set Problem Statement
You are provided with a string, termed as DIGIT_PATTERN, which consists solely of digits. The objective is to identify the first digit that repeats in the sequence. If there's no...read more
Ans. 
Identify the first repeating digit in a given string of digits.
• Iterate through the string and keep track of seen digits using a set.

• Return the first digit that repeats, or -1 if no digit repeats.

• Time complexity: O(n), where n is the length of the input string.
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Round duration - 60 Minutes
Round difficulty - Medium

Firstly Some general questions and then suddenly a cosing question with modifications

Q1. 
Print All Permutations of a String
Given an input string STR, generate and print all possible permutations of the string.
Input:
str
Output:
All permutations of the input string, each on a new line.
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Ans. 
Generate and print all possible permutations of a given input string.
• Use recursion to generate all permutations by swapping characters in the string.

• Maintain a visited array to keep track of characters already used in a particular permutation.

• Print each permutation as it is generated.

• Handle duplicate characters by skipping swapping if the character is already in the current position.
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Q1. The interviewer asked Basic SQL and Linux OS-related questions.
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Q1. The interviewer asked questions regarding projects and experience.
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Q2. The interviewer asked some aptitude and logical reasoning questions.
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Q1. Salary negotiations.
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Q1. Normal coding questions nested list
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Q2. Nested dictionary
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Data extraction, solid questions, oops