Subex Lead Engineer Interview Questions and Answers

Q1. Programming in C language
Ans. 
C language is a powerful and efficient programming language commonly used for system programming and embedded systems.
• C language is a procedural programming language

• It is widely used for developing operating systems, compilers, and embedded systems

• C is known for its efficiency and low-level access to memory

• Example: Declaring an array in C - int arr[5];
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Q2. DS basics Linked list
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Q1. Basic questions of angular and javascript.
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Q2. Es6 feature , typescript features
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Q3. Promise, observable, focus on syntax of every thing like interceptor, routing, gaurd and all .
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Q1. Behaviour subject, subject, life cycle hooks
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Q2. This round was not very easy in my case.
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Q3. Be prepared for array and object of array questions. Like sorting, searching, filtering , any logic .
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Q1. Basic HR questions and managerial round. Not being hard . But learn about your project and past organisation
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2 coding questions and 7 aptitude questions

Q1. Linked List creation was asked
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General HR questions

Q1. Famous Java Questions like why string is immuatable and basics of OOPs.
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Q2. Easy to medium level DSA based on array and string.
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Q1. Project Related Questions
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Q2. Questions related to java 8 stream API
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Q1. Question related to basic recursion
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Q2. Top kafka interview questions
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Q1. Minimum element in an array
Ans. 
Find the minimum element in an array of strings
• Iterate through the array and compare each element to find the minimum

• Use built-in functions like Math.min() or sort() to find the minimum

• Handle edge cases like empty array or array with only one element
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Q2. Reverse a linked list
Ans. 
Reverse a linked list by changing the next pointers of each node
• Iterate through the linked list and change the next pointers to reverse the list

• Use three pointers - prev, current, and next to keep track of nodes

• Example: 1 -> 2 -> 3 -> 4 -> null, after reversing: 4 -> 3 -> 2 -> 1 -> null
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Q1. Java8 and multhithreading based questions
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Q2. 1 Leetcode easy question
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Q1. TDD based live coding and spring based question
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Q2. 1 leetcode medium question
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Q1. Salary negotiations and company fit based questions
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