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Replication of databases involves copying and maintaining multiple copies of the same database for redundancy and fault tolerance.
Replication helps in ensuring high availability and fault tolerance by having multiple copies of the same data.
There are different types of replication such as master-slave replication, master-master replication, and multi-master replication.
Replication can be synchronous or asynchronous, wi...
It was good and nice to talk
ConcurrentHashMap is a thread-safe implementation of the Map interface in Java.
ConcurrentHashMap allows multiple threads to access and modify the map concurrently.
It achieves thread-safety by dividing the map into segments, allowing concurrent access to different segments.
Each segment acts as an independent hash table, reducing contention between threads.
ConcurrentHashMap provides atomic operations like putIfAbsent(), ...
Infogain interview questions for designations
I applied via Naukri.com and was interviewed before Aug 2022. There were 4 interview rounds.
Basic aptitude questions, length of test varies from time 2 time
I appeared for an interview in Sep 2016.
I am a dedicated software developer with a passion for creating innovative solutions.
Experienced in multiple programming languages such as Java, Python, and C++
Strong problem-solving skills and ability to work well in a team
Developed a mobile app for tracking fitness goals using React Native
The question is about bond and location.
Discuss the concept of bond and its importance in software development
Explain the significance of location in software development
Provide examples of how bond and location can impact software development projects
I appeared for an interview before Feb 2021.
Round duration - 150 Minutes
Round difficulty - Medium
It was an Aptitude test and Technical objective test of 60 minutes followed by a Coding test of 90 minutes.There was a 1 hour gap b/w the two tests.
Determine the number of derangements possible for a set of 'N' elements. A derangement is a permutation where no element appears in its original position.
An integer 'T' repres...
Count the number of derangements possible for a set of 'N' elements.
Derangement is a permutation where no element appears in its original position.
Use dynamic programming to calculate derangements efficiently.
Apply the formula: D(n) = (n-1) * (D(n-1) + D(n-2)), with base cases D(1) = 0 and D(2) = 1.
Given a positive integer N
, your task is to identify all prime numbers less than or equal to N
.
A prime number is a natural number greater than 1 that has no po...
Identify all prime numbers less than or equal to a given positive integer N.
Iterate from 2 to N and check if each number is prime
Use the Sieve of Eratosthenes algorithm for better efficiency
Optimize by only checking up to the square root of N for divisors
Identify and output the common strings present in both given arrays of lowercase alphabets for each test case.
The first line contains an integer 'T' representin...
The problem requires identifying and outputting common strings present in two arrays of lowercase alphabets for each test case.
Iterate through the elements of the second array and check if they are present in the first array.
Use a hash set or map to efficiently check for common elements.
Return the common strings in the order they appear in the second array.
Round duration - 60 Minutes
Round difficulty - Medium
This round had 1 question from DSA particulary Trees and after that some questions from OOPS were asked.
Given a binary tree with N
nodes, your task is to output the Spiral Order traversal of the binary tree.
The input consists of a single line containing elem...
Implement a function to return the spiral order traversal of a binary tree.
Traverse the binary tree level by level, alternating the direction of traversal.
Use a queue to keep track of nodes at each level.
Append nodes to the result list based on the traversal direction.
Handle null nodes appropriately to maintain the spiral order.
Example: Input: 1 2 3 -1 -1 4 5, Output: 1 3 2 4 5
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
Abstract class can have constructor, fields, and methods, while interface can only have constants and abstract methods.
A class can extend only one abstract class, but can implement multiple interfaces.
Abstract classes are used to provide a common base for subclasses, while interfaces are used to define a contr...
The static keyword in Java is used to create class-level variables and methods that can be accessed without creating an instance of the class.
Static variables are shared among all instances of a class.
Static methods can be called without creating an object of the class.
Static blocks are used to initialize static variables.
Example: public static int count = 0;
Constructor is a special method used to initialize objects, while a method is a regular function that performs a specific task.
Constructors are called automatically when an object is created, while methods need to be called explicitly.
Constructors have the same name as the class, while methods have unique names.
Constructors do not have a return type, while methods have a return type.
Example: Constructor - public ClassN...
Round duration - 60 minutes
Round difficulty - Medium
This round had 2 questions from DSA and after that some basic HR questions were asked.
Given an infinite supply of coins of varying denominations, determine the total number of ways to make change for a specified value using these coins. If it's not possible to make...
The task is to find the total number of ways to make change for a specified value using given denominations.
Use dynamic programming to solve this problem efficiently.
Create a 1D array to store the number of ways to make change for each value from 0 to the target value.
Iterate through the denominations and update the array based on the current denomination.
The final answer will be the value at the target index of the ar
Determine if a given string 'S' is a palindrome, considering only alphanumeric characters and ignoring spaces and symbols.
The string 'S' should be evaluated in a case...
Check if a given string is a palindrome after removing special characters, spaces, and converting to lowercase.
Remove special characters and spaces from the input string
Convert the string to lowercase
Check if the modified string is a palindrome by comparing characters from start and end
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
posted on 13 Jan 2015
based on 6 interviews
2 Interview rounds
based on 31 reviews
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