Works Applications Software Developer Interview Questions and Answers

Basic DSA from the hacker rank website

Q1. Basic to medium questions on javascript, nodejs, MySQL joints, html5 tags
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Q1. Real life problems, Use cases
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Q1. String reverse
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Q2. Dsa linked lists
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Q3. Linked lists reverse
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Q4. Map unique elements
Ans. 
Map unique elements in an array of strings
• Create a map to store unique elements

• Iterate through the array and add each element to the map as a key

• Retrieve the keys of the map to get the unique elements
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Q5. Sets find elements in set
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Sets are data structures that store unique elements and can be used to efficiently find elements in the set.
• Sets do not allow duplicate elements, so each element in a set is unique.

• To find elements in a set, you can use the 'has' method to check if a specific element is present in the set.

• Sets are commonly used in programming for tasks like removing duplicates from a list or checking for the presence of specific elemen
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General Topic And controversial topic

Q1. Number series in python
Ans. 
Number series in python involves generating a sequence of numbers based on a specific pattern or rule.
• Use loops or list comprehensions to generate number series.

• Identify the pattern or rule to determine the next number in the series.

• Examples: Fibonacci series, prime numbers series, arithmetic progression.
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Q2. Basic python questions and patterns
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Q1. Internal working of Hash Map
Ans. 
Hash Map is a data structure that stores key-value pairs and uses a hash function to map keys to their corresponding values.
• Hash Map uses a hash function to determine the index of the key-value pair in the underlying array.

• Collisions can occur when multiple keys hash to the same index, which can be resolved using techniques like chaining or open addressing.

• Hash Map typically has a load factor threshold to determine whe...read more
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A paper based test and it was technical

Q1. About the projects
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Q2. Some sql questions
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Basic Apti questions, Logic Questions, Puzzle Questions

Q1. Sorting Techniques
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Q2. Number Pattern Printing Question
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Q3. Linked List Implementation
Ans. 
Linked list is a data structure where each element points to the next element in the sequence.
• Nodes contain data and a reference to the next node

• Insertion and deletion can be done efficiently

• Traversal starts from the head node
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Q4. Diff btw 32 bit and 64 bit OS
Ans. 
32-bit OS can only address up to 4GB of RAM, while 64-bit OS can address much more.
• 32-bit OS can only address up to 4GB of RAM, while 64-bit OS can address much more

• 64-bit OS allows for larger file sizes and better performance

• 64-bit OS is more secure due to enhanced security features

• 64-bit OS is required to run certain modern software and games
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Q5. Puzzle of 3 jar
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Q6. Reverse a String
Ans. 
Reverse a given string
• Use a loop to iterate through the characters of the string

• Append each character to a new string in reverse order

• Return the reversed string
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