Eins Technology Senior Test Analyst Interview Questions and Answers

2 Easy Coding questions and 15 core java questions

Q1. Write function to calculate value of x to the power of n
Ans. 
Function to calculate x to the power of n
• Create a function that takes two parameters, x and n

• Use a loop to multiply x by itself n times

• Return the result
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Q2. Sliding window based array question
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Q1. Intersection of Linked List
Ans. 
Intersection of two linked lists is finding the node where they merge.
• Traverse both lists to find their lengths and the difference in lengths

• Move the pointer of the longer list by the difference in lengths

• Traverse both lists in parallel until they intersect
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Q2. Questions related to multi threading
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Q1. Basic hr questions
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The one-hour coding test included multiple-choice questions on Java and MySQL, as well as two coding questions.

Q1. It was based on Binary Search, Find the target element in the shifted sorted array.
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Q2. Comparator vs Comparable. Sort List of employee object using salary attribute
Ans. 
Comparator is used to define custom sorting logic, while Comparable is used to implement natural ordering. Sort list of employee objects by salary using Comparator.
• Create a Comparator implementation to compare employee objects based on salary attribute

• Use Collections.sort() method with the custom Comparator to sort the list of employee objects
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Q1. Basic OOps concepts.
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Q2. Dasic DBMS
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