Dream11 Software Development Engineer 1 Interview Questions and Answers

Q1. Basic questions of related role.
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Q1. Deeper technology-related questions and simple coding
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Q1. Coding questions was leecode replace 3 concurrent character in string until there is none
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Q2. You can google the answer
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Q1. Here also leetcode easy
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Q2. Easily solvable
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Q1. Coding question leetcode medium
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Q1. Coding question
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Q2. Leetcode medium
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They given 2 program to to 1-2 hour

Q1. Ask basic programming questions
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30 mins test on leetcode

Q1. Python functions
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Q2. Join on multiple tables
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The test consisted of 4 DSA questions (1 easy, 2 medium, 1 hard) that had to be completed in 2 hours. They were standard questions from Leetcode and the test was similar to Leetcode's weekly coding contest.

Q1. Simple DSA questions like time complexity to insert in a Hash Map, the difference between singly and doubly linked lists, etc.
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Q2. Subarray with sum 0
Ans. 
Find subarray in an array with sum 0
• Iterate through the array and keep track of the running sum

• Store the running sum in a hashmap and check if the same sum has been seen before

• If the sum is 0 or if the running sum is already in the hashmap, a subarray with sum 0 exists
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Q3. Linked List Cycle
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Q4. Rainwater trapping proble
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Q1. Design a database for a blogging website
Ans. 
Database design for a blogging website
• Create tables for users, blog posts, comments, and categories

• Use primary and foreign keys to establish relationships between tables

• Include fields such as title, content, author, date, and tags

• Implement indexing for faster retrieval of data

• Consider implementing a caching mechanism for improved performance
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Q2. What can be done to balance the load of requests coming to a single server
Ans. 
To balance the load of requests on a single server, one can implement load balancing techniques.
• Implementing a load balancer to distribute incoming requests evenly across multiple servers

• Using round-robin algorithm to route requests to different servers in a sequential manner

• Utilizing server health checks to monitor the performance of each server and adjust the load distribution accordingly
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Q1. Design database for my college
Ans. 
Design a database for a college
• Create tables for students, courses, professors, departments, and grades

• Establish relationships between tables using foreign keys

• Include attributes such as student ID, course ID, professor ID, department ID, and grade

• Consider normalization to reduce redundancy and improve data integrity
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Q2. Pseudo code to validate password
Ans. 
Pseudo code to validate password
• Create a function that takes a password as input

• Check if the password meets the required criteria (e.g. length, special characters)

• Return true if the password is valid, false otherwise
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Q3. Strengths and weakness that can affect my profesional life
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Q4. Challenges faced during the projects in my resum and how did I overcome them
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