Merkle Software Engineer Interview Questions and Answers

It consists of three basic questions related to string and array.

Q1. This is the technical round 1. This went for arround 45 minutes. Interviewer asked about myself. Then he gave me a problem(Finding Second Largest) Then he took a look at my resume, my primary language was ...read more
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Q1. This was technical round 2.It goes on for arround 1 hours. Interviewer asked about the project i worked on . Then interviewer gave me two problem 1. Flattening nested list 2. Second maximum Then two sql q...read more
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Q1. Tell me about yourself.
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Q2. What is your family background?
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First round was coding test which was neither too difficult nor a piece of cake. There were three questions to do Java. One of them was to separate words in a given string which was a sentence.

Q1. Easy question: Write a program to separate odd and even numbers from an array.
Ans. 
Program to separate odd and even numbers from an array.
• Loop through array and check if each number is odd or even

• Create two separate arrays for odd and even numbers

• Return both arrays
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Q1. What is your family background?
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Q2. What are your strengths and weaknesses?
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Q3. Tell me about yourself.
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Q4. Tell me about your project
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Q1. Basic JS - var, let, const, arrow functions, equality operators, truthy falsy values, Logical Operators, React hooks, lifecycle methods, Redux flow, one DSA question
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Q1. React Native Bridging Concept
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Q1. Regular discussion on why you want to join the company, long terms goals.
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Q1. Palindrome sentence
Ans. 
A palindrome sentence is a sentence that reads the same forwards and backwards.
• Check if the sentence is the same when read forwards and backwards, ignoring spaces and punctuation.

• Examples: 'A man, a plan, a canal, Panama' is a palindrome sentence.

• Examples: 'Hello world' is not a palindrome sentence.
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Q2. Target sum array
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1-HR round, basic Aptitude questions

Q1. Interviewer was good, Tough basic java questions were asked, Problem : Count the frequency of Char in given string.
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Q2. Inheritance in java
Ans. 
Inheritance in Java allows a class to inherit properties and behaviors from another class.
• Inheritance is achieved using the 'extends' keyword in Java.

• Subclasses can access the methods and fields of the superclass.

• Java does not support multiple inheritance, but a class can implement multiple interfaces.
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Q3. What is java platform independent
Ans. 
Java platform independence refers to the ability of Java code to run on any device or operating system without modification.
• Java code is compiled into bytecode, which can be executed on any device with a Java Virtual Machine (JVM)

• JVM acts as an abstraction layer between the Java code and the underlying hardware and operating system

• This allows Java programs to be written once and run anywhere, making them platform indep
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Q4. SQL query for second max salary
Ans. 
Use SQL query with subquery to find second highest salary
• Use subquery to find the max salary first

• Then use another subquery to find the max salary excluding the previously found max salary
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Q5. Access modifiers in depth
Ans. 
Access modifiers control the visibility and accessibility of classes, methods, and variables in object-oriented programming.
• Access modifiers include public, private, protected, and default (package-private)

• Public: accessible from any other class

• Private: only accessible within the same class

• Protected: accessible within the same package and subclasses

• Default: accessible within the same package
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Basic aptitude way taken into account

Basic data structures and oops concept