Daleel Petroleum Interview Questions and Answers

Q1. Introduce yourself , tell me about marketing,
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Q2. Sell me something,hr type questions
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Q3. How you convince the customer
Ans. 
I convince the customer by understanding their needs, providing relevant information, and building trust.
• Listen actively to their concerns and needs

• Provide relevant information and options

• Address any objections or doubts they may have

• Build trust through honesty and transparency

• Highlight the benefits and value of the service

• Offer personalized solutions

• Follow up and provide ongoing support
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There were 48 questions to be done in 60 minutes.
the platform used was below average.
about 1400 gave the test

The Next round was a GD.
about 250 were shortlisted.
it was held in groups of 10 - 13.
there were 2 Panelists observing the body language, the fluency and time you speak for.
It is very important that you either start or conclude the GD.
leaves a good impression.

Q1. Tell me about yourself
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Q2. What is Data Analysis?
Ans. 
Data analysis is the process of inspecting, cleaning, transforming, and modeling data to discover useful information.
• It involves collecting and organizing data

• It includes statistical analysis and visualization

• It helps in making informed decisions

• Examples include market research, financial analysis, and scientific research
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Q3. SQL Queries using Joins and sub-queries
Ans. 
SQL Queries using Joins and sub-queries
• Joins are used to combine rows from different tables based on a related column

• Sub-queries are queries nested within another query

• Joins and sub-queries can be used together to retrieve specific data from multiple tables
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Q4. Many questions about projects mentioned in the resume.
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Q5. Estimation and probability questions were asked to see the way you approach a question logically.
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Q1. Tell me about Yourself
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Q2. Again Questions based on resumes
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Q3. Some Regular HR Questions like why latent view, where to do you yourself in 5 years.....etc.
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Q4. Any questions for me?
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Q1. Can you describe your past experiences?
Ans. 
I have over 5 years of experience in banking operations, including managing daily transactions, reconciliations, and customer inquiries.
• Managed daily transactions and ensured accuracy

• Performed reconciliations to identify discrepancies

• Handled customer inquiries and resolved issues promptly
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Was taken on firefox Brower and was easy

Very basic questions like swap numbers etc

Q1. Basic questions on cpp
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Q2. Opps concept like encapsulation etc
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Q3. Write a code to reverse a string
Ans. 
Code to reverse a string
• Create an empty string to store the reversed string

• Loop through the original string from end to start

• Append each character to the empty string

• Return the reversed string
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Q1. Do you have any prior experience?
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Q2. What do you mean by human resources?
Ans. 
Human resources refer to the people who make up the workforce of an organization and the management of their skills, knowledge, and abilities.
• Human resources involve managing and developing the workforce of an organization

• It includes recruitment, training, performance management, and employee relations

• HR also deals with compensation and benefits, compliance with labor laws, and workplace safety

• Effective HR practices ca...read more
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Q3. What can you tell us about country Inn?
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Q4. What are your weaknesses?
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Round duration - 120 minutes
Round difficulty - Medium

Timing was 9: 30 AM. Platform was quite good and easy to understand.

Q1. Reverse Only Letters
You are given a string, ‘S’. You need to reverse the string where characters that are not an alphabet stay in the same place, and the rest reverse their positions.
Eg: “a-bcd” become...read more
Ans. Two Pointer Approach
Approach: Just like in order to reverse a string ‘S’ = “abcd”, we can can swap(S[0], S[3]) and swap(S[1],S[2]) to get new string “dcba”.
 
Similarly in this problem, we do the same using two pointers while ignoring the non-letter characters.
 
Eg: S = “a-bcd” we swap(S[0], S[4]) and swap(S[2], S[3]) to get the result.
 
Algorithm:
1. In the given string what we can do is maintain two variables ...read more
Answered by CodingNinjas
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Q2. Find duplicates in array
You are given an array/list 'ARR' consisting of N integers, which contains elements only in the range 0 to N - 1. Some of the elements may be repeated in 'ARR'. You...read more
Ans. Sorting
1. The most trivial approach would be to sort the array/list ‘ARR’ and then return the duplicates.
2. After sorting the array in non-decreasing order, do the following for all the elements from i = 0 to i = n - 2:
   • If ARR[i] == ARR[i + 1], then add ARR[i] to the the output list.
   • While ARR[i] == ARR[i + 1], do i = i + 1, since we don’t want to add the same duplicate elements again and again.
   • Else continue.
3. After this loop, w...read more
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Q3. Pancake Sorting
You are given an array of integers ‘ARR’. Sort the array by performing a series of pancake flips. In one pancake flip, we do the following steps:
Choose an integer ‘K’ where 1 <= ‘K’ &l...read more
Ans. Pancake Sorting.
The main idea to solve this problem is that if we want to place a number at an index, then we need a maximum of 2 moves that are:- 
 
1. Bring it to the 0th index by reversing the prefix array till its index, e.g., if you chose some index K, then reverse the array from 0th index till Kth index.
2. Reverse the prefix array from the 0th index to the index where we want to place it.
• The main algorithm runs...read more
Answered by CodingNinjas
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Q4. Sum of Digits
Ninja is given an integer ‘N’. One day Ninja decides to do the sum of all digits and replace the ‘N’ with the sum of digits until it becomes less than 10. Ninja wants to find what will be the...read more
Ans. Brute Force Approach
The main idea is to do the sum of digits until it becomes less than 10.
 
Algorithm:
• Add a condition if N is less than 10 then return N.
• Do the sum of all digits.
• Make a recursive call and pass the sum of digits as N.
• Return the answer which you get from a recursive call.
Space Complexity: O(1)Explanation:
O(1).
 
We are using constant space to solve this.
Time Complexity: OtherExplanation:
O(log10(...read more
Answered by CodingNinjas
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Round duration - 30 minutes
Round difficulty - Medium

Timing was 9:30 AM. The interviewer was very nice.

Q1. Fibonacci Number
You are given an integer, all you have to do is to find whether this number is a Fibonacci number or not.
Fn is said to be a Fibonacci sequence such that each number in Fn is the sum of ...read more
Ans. Brute Force
The basic idea is to keep generating Fibonacci numbers until we find a number equal to the given number or the generated number becomes greater than the given number. If the generated number is equal to the given number then it means the given number is a Fibonacci number. Otherwise, it is not a Fibonacci number.
 
The steps are as follows:
 
1. Check if ‘N’ is 0 or 1, return true.
2. Create two variables ‘a’...read more
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Q2. SQL Question
Write SQL query to find second highest salary from a Table.
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Round duration - 30 Minutes
Round difficulty - Medium

Timing was 12 PM. Interviewer was not good.

Q1. Count Frequency
You are given a string 'S' of length 'N', you need to find the frequency of each of the characters from ‘a’ to ‘z’ in the given string.
Example :
Given 'S' : abcd...read more
Ans. Count Frequency
Since there are just 26 lower case characters, we can use an array of size 26 to store the result.
 
Here is the algorithm : 
 
1. Create an array (say, ‘FREQ’), where 0-th index stores the frequency of ‘a’, 1st index stores the frequency of ‘b’ and so on. So the last index i.e. 25th index stores the frequency of ‘z’.
2. Run a for loop from 0 to ‘N’ - 1 (say, iterator ‘i’), on the string and do the f...read more
Answered by CodingNinjas
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Q2. DBMS Question
What is Normalization and 3NF?
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