InfinityLabs Software Engineer Interview Questions and Answers

Q1. Given the react machine coding example
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Q1. Explain about your projects
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Coding Rount
DSA Round + Puzzle
SQL + Project Discussion
JS

Dsa problems dp and tress problem

Q1. Tell me about your self
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Q2. Projects and intership
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Q1. Given an array Reverse array
Ans. 
Reverse array of strings
• Iterate through the array and swap elements from start to end

• Use two pointers, one at the beginning and one at the end, and swap elements until they meet
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Q2. Giaven a string Reverse string
Ans. 
Reverse a given string
• Use built-in functions like reverse() or loop through the string in reverse order

• Create a new string and append characters from the original string in reverse order

• Convert the string to an array of characters, reverse the array, and then join it back into a string
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Q3. Given array find sum of all elements
Ans. 
Calculate sum of all elements in a given array of strings
• Iterate through the array and convert each element to integer before adding to sum

• Handle edge cases like empty array or non-numeric elements

• Return the final sum after iterating through all elements
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Q1. RDBMS related questions asked
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Q2. SQL login building related questions
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It was online test having coding questions for logical part and UI part

Q1. Again logical and technical round with questions that you need to code while sharing your screen.
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Q2. Todo list problem
Ans. 
Implement a todo list with add, delete, and mark as completed functionalities.
• Create an array to store the tasks

• Implement functions to add, delete, and mark tasks as completed

• Display the tasks with their completion status
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Q1. Basic js concepts
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Q1. Middleware , dependency injection
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Q1. Subject and subject behaviour
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