KreditBee Senior Executive Operations Interview Questions and Answers

Q1. Find median of 2D array
Ans. 
Find median of 2D array of strings
• Flatten the 2D array into a 1D array

• Sort the 1D array

• Calculate the median based on the length of the array
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Q1. LLD of Twitter System
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Round one consist of coding problems and there's a minimum criteria of solving 2 problems at least to clear this round

Q1. First question was a coding question, merge intervals leetcode
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Q2. Second question was again of leetcode, compare strings
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2hrs aptitude test was there

2 hrs coding test was there

GD was conducted and then i passed it

Quantitative case study on cost benefit analysis of 2 types of public buses running in a city. Need to choose one of them with higher profits

Fraud detection model: 3rd party firm proposing to use thier model for fraud detection. Need to profit analysis of whether to go for it or not.

Q1. Culture fit round to understand if compatible with the company
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Medium Leetcode, Array, String, Tree, DP

Q1. System Design, Design Payment Platform
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Q1. Joins outputs for various types of joins
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the right table

• RIGHT JOIN returns all rows from the right table and the matched rows from the left table

• FU...read more
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Q2. Query using window functions
Ans. 
Window functions are used to perform calculations across a set of table rows related to the current row.
• Window functions are used in SQL to perform calculations on a set of rows related to the current row.

• They allow you to perform calculations like ranking, moving averages, and cumulative sums.

• Examples of window functions include ROW_NUMBER(), RANK(), and SUM() OVER().
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SQL - technical round

Case Study round - 2

Mostly medium leetcode

Mostly medium level DSA

Q1. AWS, GCP , Kubernetes, Docker
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Q1. Security standards, cloud security
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