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20 Mcqs and 2 coding questions
Sort zeroes to end of array
Iterate through the array and move all zeroes to the end
Use two pointers approach to swap elements
Maintain a count of zeroes encountered
I was interviewed before Mar 2023.
Round 1 was based on two sections.
First section was of multiple choice based on technical skills. Second section was coding round.
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Multi Threading is the ability of a program to perform multiple tasks simultaneously.
It improves performance by utilizing multiple cores of CPU.
It requires synchronization to avoid race conditions.
Examples include web servers, video games, and image processing software.
Reflection is a feature in Java that allows inspecting and modifying the behavior of a program at runtime.
Reflection provides a way to access and manipulate classes, methods, and fields dynamically.
It can be used to create new objects, invoke methods, and access private fields.
Reflection is commonly used in frameworks like Spring and Hibernate.
Example: Using reflection to get the class name of an object - obj.getClass(
I applied via Campus Placement and was interviewed before Dec 2023. There was 1 interview round.
Interviewed as part of college placements, first round consisted of aptitude and CS related MCQs;
I applied via Campus Placement
20 MCQs, 1 RestAPI Problem, 1 Dp problem
I applied via Campus Placement and was interviewed in Mar 2022. There were 4 interview rounds.
Finding common elements in two sorted linked lists.
Traverse both lists simultaneously using two pointers.
Compare the values of the nodes pointed by the two pointers.
If they are equal, add the value to the result list and move both pointers.
If not, move the pointer pointing to the smaller value.
Repeat until one of the lists is fully traversed.
Finding the Kth element after merging two sorted arrays.
Merge the two sorted arrays into a single array.
Sort the merged array.
Return the Kth element from the merged and sorted array.
OOPS is a programming paradigm based on objects while DBMS is a software system for managing databases.
OOPS focuses on encapsulation, inheritance, and polymorphism
DBMS manages data through CRUD operations and supports ACID properties
Examples of OOPS languages include Java, C++, and Python
Examples of DBMS include MySQL, Oracle, and SQL Server
I applied via LinkedIn and was interviewed in Apr 2022. There were 5 interview rounds.
String manipulation problems from geeks for geeks with some medium and hard problems in DSA from leetcode
Graph implementation involves creating nodes and edges to represent data and relationships.
Nodes represent data points and edges represent relationships between them
Graphs can be directed or undirected
Common graph algorithms include BFS, DFS, and Dijkstra's algorithm
String pool is a cache of string literals stored in memory for efficient reuse.
String pool is a part of Java's memory management system.
It stores a collection of unique string literals to save memory.
When a new string is created, it is first checked in the pool and reused if already present.
String pool can be accessed using the intern() method.
Example: String s1 = "Hello"; String s2 = "Hello"; s1 and s2 will point to t
Strings are immutable in Java to ensure thread safety and prevent unintended changes.
Immutable objects are safer to use in multi-threaded environments
String pool optimization is possible because of immutability
StringBuffer and StringBuilder classes are available for mutable string operations
I applied via Campus Placement and was interviewed in Jul 2022. There were 4 interview rounds.
Conducted on their platform for 120 minutes
To find the diameter of a binary tree, we need to find the longest path between any two nodes in the tree.
Traverse the tree recursively and calculate the height of the left and right subtrees.
Calculate the diameter of the left and right subtrees recursively.
The diameter of the tree is the maximum of the following three values: 1. Diameter of the left subtree 2. Diameter of the right subtree 3. Height of the left sub...
I applied via Campus Placement and was interviewed in Jul 2024. There were 2 interview rounds.
Questions were easy to moderate level from leetcode
I applied via Newspaper Ad and was interviewed in Aug 2024. There were 2 interview rounds.
Easy 1 dsa and 35 mcqs
Object-oriented programming concepts like inheritance, encapsulation, polymorphism, and abstraction.
Inheritance: Allows a class to inherit properties and behavior from another class.
Encapsulation: Bundling data and methods that operate on the data into a single unit.
Polymorphism: Ability to present the same interface for different data types.
Abstraction: Hiding the complex implementation details and showing only the ne
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