Winman Software Software Developer Trainee Interview Questions and Answers

First round will be coding test which will have Core java questions

Q1. Type of Class Loaders available in java
Ans. 
Java has three types of class loaders: Bootstrap Class Loader, Extension Class Loader, and System Class Loader.
• Bootstrap Class Loader loads core Java classes located in the bootstrap classpath.

• Extension Class Loader loads classes from the extensions directory.

• System Class Loader loads classes from the classpath specified by the CLASSPATH environment variable.
Answered by AI
Add your answer
Q2. Coding question related find 3nd highest number with single loop and minimum time complexity.
Ans. 
Use a single loop to find the 3rd highest number in an array with minimum time complexity.
• Iterate through the array and keep track of the three highest numbers encountered so far.

• Update the three highest numbers as you iterate through the array.

• Return the third highest number once the loop is completed.
Answered by AI
Add your answer
Q3. What is diff between cyclicBarrier and countDownLatch?
Ans. 
CyclicBarrier allows a group of threads to wait at a barrier until all threads have reached it, while CountDownLatch allows one or more threads to wait until a set of operations being performed in other threads completes.
• CyclicBarrier is reusable, while CountDownLatch is not.

• CyclicBarrier allows all threads to wait for each other, while CountDownLatch allows one thread to wait for others.

• CyclicBarrier resets automatica...read more
Answered by AI
Add your answer
Q4. What is diff between JPARepository and CURDRepository?
Ans. 
JPARepository is a Spring Data interface for JPA-based repositories, while CRUDRepository is a generic interface for CRUD operations.
• JPARepository extends CRUDRepository and provides additional JPA-specific methods.

• CRUDRepository is a generic interface for CRUD operations on a repository.

• JPARepository is typically used for JPA-based repositories, while CRUDRepository can be used for any type of repository.

• JPARepository...read more
Answered by AI
Add your answer

Q1. Second round is pending
Add your answer

1) Finding and removing loop in linked list. 2)find pair of given sum in binary tree

Q1. Print bottom view of binary tree
Ans. 
Print the bottom view of a binary tree
• Use a map to store the horizontal distance and node value at each level

• Perform a level order traversal of the binary tree

• Update the map with the node value at each horizontal distance

• Print the node values in the map for the bottom view
Answered by AI
Add your answer
Q2. Oops related output based questions
Add your answer

Machine coding round

Q1. TCP/IP related questions, what happens when you search a webpage?
Add your answer
Q2. Past projects discussions
Add your answer

Q1. Behavioural questions on how would you tackle a particular scenario
Add your answer

Basic OOP questions for python programming language

Q1. What's abstraction
Ans. 
Abstraction is the concept of hiding complex implementation details and showing only the necessary information to the user.
• Abstraction allows users to focus on what an object does instead of how it does it

• It helps in reducing complexity and improving efficiency in software development

• Example: In object-oriented programming, abstract classes and interfaces are used to achieve abstraction
Answered by AI
Add your answer
Q2. What's the difference between SQL and NoSQL database
Ans. 
SQL databases are relational databases with structured data, while NoSQL databases are non-relational databases with flexible, unstructured data.
• SQL databases use structured query language for defining and manipulating data, while NoSQL databases use different query languages or APIs.

• SQL databases are table-based, with a predefined schema, while NoSQL databases are document, key-value, wide-column, or graph-based.

• SQL d...read more
Answered by AI
Add your answer

Q1. Reverse a linked list
Ans. 
Reverse a linked list by changing the direction of pointers
• Start with three pointers: current, prev, and next

• Iterate through the linked list, updating pointers to reverse the direction

• Update the head of the linked list to the last node after reversing
Answered by AI
Add your answer
Q2. Implement binary search algorithm
Ans. 
Binary search algorithm efficiently finds the target value in a sorted array.
• Start by defining the low and high indices of the array.

• Calculate the mid index and compare the target value with the value at mid.

• If target is less than mid value, update high to mid-1; if greater, update low to mid+1.

• Repeat until target is found or low is greater than high.
Answered by AI
Add your answer

Q1. Brief Introduction and basic questions
Add your answer
Q2. Future plans and how am i going to achieve them
Add your answer

Q1. Lazy loading in react
Add your answer
Q2. Cache bursting
Add your answer
Q3. Difference between == and ===
Add your answer

Java, spring,springboot

2 DSA questions Both are from DP

Q1. 2 Questions , 1 is DSA
Add your answer
Q2. Second question is Puzzle
Add your answer