Ksolves India Limited Reactjs Developer Interview Questions and Answers

It was technical aptitude test on hackerearth

Q1. Coding questions followed by some puzzles
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Q2. Was asked about datastructures like dictionary and hash maps working
Ans. 
Dictionaries and hash maps are key-value data structures that provide fast data retrieval and storage using hashing techniques.
• Dictionaries store data in key-value pairs, e.g., {'name': 'Alice', 'age': 30}.

• Hash maps use a hash function to compute an index for storing values, ensuring O(1) average time complexity for lookups.

• Collisions occur when multiple keys hash to the same index; they can be resolved using chaining ...read more
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Q3. SQL questions but basic
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Q1. This was techno-managerial round heavy on puzzles and some advanced technical questions. Study about API working
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Q2. Basic python programming is necessary
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Java, SQL, SDLC agile, db queries, Http response and request codes status

Q1. Questions related to resume, ds we worked on, http status cod eand response, related to rest api
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Q2. Hash set internal working, how do you fine second largest element in an array without sorting,
Ans. 
Finding second largest element in an array without sorting using hash set.
• Create a hash set and iterate through the array, adding each element to the set.

• Initialize two variables to keep track of the largest and second largest elements.

• Iterate through the set and compare each element to the largest and second largest variables.

• Return the second largest variable.
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Q3. Idempotent methods, safe methods in http, rest api working, to find en element from binary array related program
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Q1. Same as technical 2, more ds related questions and http rest related
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Q1. Salary discussion ask as much as you can, don't hesitate
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Basic coding question will be there

Q1. Opps , dbms , data structure
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Q2. Explain about inheritence
Ans. 
Inheritance is a mechanism in object-oriented programming where a class can inherit properties and methods from another class.
• Inheritance allows for code reuse and promotes code organization.

• The class that is being inherited from is called the parent or base class.

• The class that inherits from the parent class is called the child or derived class.

• The child class can access all the public and protected members of the par...read more
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