ATMECS Global Web Developer Interview Questions and Answers

Round duration - 60 minutes
Round difficulty - Medium

On-Campus under the invigilation of College professors and campus placement ambassadors.

Q1. Technical Question
Q1.Why is there no auto-increment in MongoDB?
 
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Q2. Count Subsequences
You have been given an integer array/list 'ARR' of size 'N'. Your task is to return the total number of those subsequences of the array in which all the elements are equa...read more
Ans. Brute Force
The idea is to generate all the subsequences and check whether the elements present are equal or not.
 
Here is the algorithm :
 
1. Generate all the subsequences of the given array.
2. Maintain a variable ‘COUNT’ which stores the total number of subsequences in which all the elements are equal.
3. Iterate over each of the generated subsequences.
   1. In case all the elements of the current subsequence are equal, we in...read more
Answered by CodingNinjas
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Q3. Reverse Linked List
Given a singly linked list of integers. Your task is to return the head of the reversed linked list.
For example:
The given linked list is 1 -> 2 -> 3 -> 4-> NULL. Then th...read more
Ans. Brute Force
The brute force approach is to use recursion. First, we reach the end of the Linked List recursively and at last node, we return the last node, which becomes the new head of the partially reversed Linked List. While coming back from each recursion call we add the current node in the current recursion call to the last node of the partially reversed Linked List and assign the current node to null.
 
Steps:
&...read more
Answered by CodingNinjas
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Round duration - 30 minutes
Round difficulty - Medium

Q1. Application Question
How would you automate searching profile via database of stored mobile numbers/email addresses.
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Round duration - 20 minutes
Round difficulty - Easy

Q1. Basic HR Questions
What software packages are you familiar with? 
On a scale of 1 to 10 how would you rate yourself as a leader? 
What makes you angry?
Ans. 
Tip 1 : Always be honest .
 
Answered by CodingNinjas
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Q1. What is your approach to building basic logic skills?
Ans. 
My approach to building basic logic skills involves practicing problem-solving exercises, breaking down complex problems into smaller parts, and seeking feedback to improve.
• Practice problem-solving exercises regularly to strengthen logical thinking abilities.

• Break down complex problems into smaller, more manageable parts to better understand the problem and find solutions.

• Seek feedback from peers or mentors to identify...read more
Answered by AI
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Q1. Some behavioural questions?
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Q1. React component life cycle.
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Q2. Redux, React Hooks, State, Props.
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Q1. Basics about angular
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Q2. Javascript concepts
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Q1. Javascript question
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Q1. Hoisting, CSS selector, Reverse string programme, Angular Hooks
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Q1. Basic Question CSS, HTML5, Angular
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Q1. Var,let and const differences
Ans. 
var, let, and const are all used for variable declaration in JavaScript, but they have different scopes and behaviors.
• var is function scoped, let and const are block scoped

• var can be redeclared and updated, let can be updated but not redeclared, const cannot be redeclared or updated

• const is used for variables that should not be reassigned, like constants
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Q2. What is a promise? in javascript
Ans. 
A promise in JavaScript represents the eventual completion (or failure) of an asynchronous operation and its resulting value.
• Promises are objects that represent the eventual completion (or failure) of an asynchronous operation.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() to handle success and failure.

• Example: new Promise((resolve, reject) => { ... }).then(res
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1 hr -duration and Question is Full of basics and technology what we have used