Datatex Global Business Solutions BI Developer Interview Questions and Answers

Q1. Basic Questions about Power BI
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Q1. Salary Discussion Location Discussion
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Q1. Roles and Responsibilities
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Q2. Qliksense Migration
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Q1. Reason for separation
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Q1. Qlik related questions were asked
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Q1. Roles And Responsibilities and Power BI Questions
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Q1. Generic Salary Discussion
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Q1. Project related question , Interface , Abstraction
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Q1. Scenario based question
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Q1. Salary Discussioon
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General aptitude, computer science fundamentals multiple-choice questions, and data structures and algorithms multiple-choice questions were asked.

Q1. Given a string, write a function to reverse the string.
Ans. 
Function to reverse a given string
• Create an empty string to store the reversed string

• Iterate through the input string in reverse order and append each character to the new string

• Return the reversed string
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Q2. Given a sorted array of integers, write a function to perform a binary search to find the index of a target value. If the target value is not found, return -1.
Ans. 
Binary search function to find target value in sorted array
• Define function that takes sorted array and target value as input

• Initialize variables for start, end, and middle indices

• Use while loop to iterate until start is less than or equal to end
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Q1. About the company
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Q2. What are three significant achievements in your life?
Ans. 
Graduating with honors, winning a hackathon, volunteering in a developing country
• Graduated with honors from university with a degree in Computer Science

• Won first place in a hackathon competition by developing a unique and innovative software solution

• Volunteered in a developing country to help build schools and provide education to underprivileged children
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Q1. Too much focus on theory questions. Like how would you link multiple middleware - write code for that
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Q1. Sliding Window find the subarray with sum equal to k
Ans. 
Using sliding window technique to find subarray with sum equal to k.
• Initialize two pointers at the start of the array.

• Move the right pointer to expand the window until the sum is greater than or equal to k.

• Move the left pointer to shrink the window if the sum exceeds k.

• Repeat until the end of the array is reached.

• Example: Input array [1, 4, 20, 3, 10, 5], k=33. Output: [20, 3, 10].
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