FarEye Associate Solutions Engineer Interview Questions and Answers

Online technical aptitude test

Q1. Related oops and old company projects
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Arrays, basics. easy, some important topics in python and sql

Q1. SQL basics question learned in online or self
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Q2. Joins, groupby, clause, projection, having
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Q1. What is your name
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Q2. What is your strength
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Q1. Basics questions of react native
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Round duration - 40 minutes
Round difficulty - Easy

Q1. 
Find a Node in Linked List
Given a singly linked list of integers, your task is to implement a function that returns the index/position of an integer value 'N' if it exists in the linked list. Return -1 i...read more
Ans. 
Implement a function to find the index of a given integer in a singly linked list.
• Traverse the linked list while keeping track of the index of each element.

• Compare each element with the target integer 'N'.

• Return the index if 'N' is found, otherwise return -1.

• Handle cases where the list is empty or 'N' is not found.

• Consider the constraints on the number of test cases and the length of the linked list.
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Q2. 
Implement Stack with Linked List
Your task is to implement a Stack data structure using a Singly Linked List.
Explanation:
Create a class named Stack which supports the following operations, each in O(1...read more
Ans. 
Implement a Stack data structure using a Singly Linked List with operations in O(1) time.
• Create a class named Stack with getSize, isEmpty, push, pop, and getTop methods.

• Use a Singly Linked List to store the elements of the stack.

• Ensure each operation runs in constant time complexity (O(1)).

• Handle edge cases like empty stack appropriately.

• Example: For input '5', '3 10', '5', '1', '2', '4', the output should be '10', '1'...read more
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Q3. 
Cycle Detection in a Singly Linked List
Determine if a given singly linked list of integers forms a cycle or not.
A cycle in a linked list occurs when a node's next points back to a previous node in the ...read more
Ans. 
Detect if a singly linked list has a cycle using O(N) time complexity and O(1) space complexity.
• Use Floyd's Tortoise and Hare algorithm to detect cycle in linked list

• Maintain two pointers, slow and fast, moving at different speeds

• If there is a cycle, the two pointers will eventually meet

• If one of the pointers reaches the end of the list (null), there is no cycle
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Round duration - 20 minutes
Round difficulty - Easy

Q1. 
Top View of Binary Tree
Given a binary tree of integers, the task is to return the top view of the given binary tree. The top view of the binary tree is the set of nodes visible when viewed from the top.
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Ans. 
Return the top view of a binary tree given in level-order format.
• Traverse the binary tree in level-order and keep track of the horizontal distance of each node from the root.

• Use a map to store the nodes at each horizontal distance, and only keep the first node encountered at each distance.

• Return the values of the nodes stored in the map in sorted order of their horizontal distance.

• Example: For the given binary tree, th...read more
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Q2. 
Problem Statement: Delete Node In A Linked List
Given a singly linked list of integers and a reference to a node, your task is to delete that specific node from the linked list. Each node in the linked li...read more
Ans. 
Given a singly linked list of integers and a reference to a node, delete the specified node from the linked list.
• Traverse the linked list to find the node to be deleted

• Update the pointers to skip over the node to be deleted

• Print the modified linked list after deletion
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Create a CRUD application

Q1. Javascript, hoisting ,promise ,callback function
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Q2. Array , object ,JSON,for loop
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Q3. Introduction react js,and other frameworks ,like angular, Vue
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Q1. What are your salary expectations?
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Q2. Basic details for joining company
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Aptitude test was easy level and moderate level.

Coding test was held in the google form which was very easy.

Q1. What is volatile keyword?
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Q2. What is abstract class
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Q3. Where do you use abstract class
Ans. 
Abstract classes are used to provide a common interface and partial implementation for related classes.
• Abstract classes are used when you want to create a base class that cannot be instantiated on its own but can be inherited by other classes.

• They are useful when you want to define common methods and properties that multiple related classes should have.

• Abstract classes can have both abstract and non-abstract methods.

• Ab...read more
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Basic Questions, Puzzle, Logical

Mainly on some common dsa and loop questions

Q1. Volume of cabin, Introduction
Ans. 
The volume of a cabin refers to the amount of space inside the cabin.
• Volume can be calculated by multiplying the length, width, and height of the cabin.

• For example, if a cabin is 10 feet long, 8 feet wide, and 6 feet high, the volume would be 480 cubic feet.

• Volume is often measured in cubic units such as cubic feet or cubic meters.
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