Infotact Solutions Interview Questions and Answers

Mcqs on javascript,. 1 coding question

Easy aptitude test containing mathematics and logical questions

4 leetcode easy to medium level

Q1. Questions on project and tech stack.
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4 Coding Questions Were Given.
Check Palindrome String
Longest Increasing Subsequence
Group Anagrams
Add Two Numbers(Linked List)

Questions were picked from leetcode but the restriction of not using any inbuild function made them difficult to solve in the given time frame.

Q1. Basic Java Technical Questions
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Q2. Throws Vs Throw
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Throws is used for checked exceptions in Java, while throw is used to explicitly throw an exception.
• Throws is used in method signature to declare that the method may throw a checked exception.

• Throw is used to actually throw an exception in the code.

• Example: public void method() throws IOException { //code }

• Example: throw new IOException();
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Q3. Method Overriding Basics and Output-Based Questions
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Q4. Springboot annotations
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Q5. Inheritance and Concept of Abstract Classes and Interfaces
Ans. 
Inheritance allows a class to inherit properties and behaviors from another class. Abstract classes cannot be instantiated and can have abstract methods. Interfaces define a contract for classes to implement.
• Inheritance allows a class to inherit properties and behaviors from another class

• Abstract classes cannot be instantiated and can have abstract methods

• Interfaces define a contract for classes to implement
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Q1. Find the second most occurrence if string in JavaScript
Ans. 
Find the second most occurrence of a string in an array of strings in JavaScript.
• Create a map to store the count of each string in the array

• Sort the map by values in descending order to find the most occurrence

• Return the key of the second element in the sorted map
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Q1. Introduction and technical questions.
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Q2. What is the use of JAVA API?
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The JAVA API is a collection of pre-written classes and interfaces that provide ready-to-use functionality for Java developers.
• The JAVA API allows developers to save time and effort by using pre-built code for common tasks.

• It provides a wide range of classes and interfaces for various purposes such as file handling, networking, database connectivity, GUI development, etc.

• Developers can leverage the API to access system...read more
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Q3. Questions are picked from Leetcode.
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The duration of the test is one hour and four coding questions are asked.

Aptitude test question logical reasoning and cheking availablity.

It's test last test and skill related to C ,Java, HTML