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posted on 1 Nov 2023
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posted on 16 Jun 2023
Hackerrank 3 coding quesitons one easy one medium one hard
The sum of n natural numbers can be calculated using a simple formula.
The formula to calculate the sum of n natural numbers is n*(n+1)/2.
For example, the sum of first 5 natural numbers (1+2+3+4+5) = 5*(5+1)/2 = 15.
Access specifiers in OOPs define the scope of class members.
Access specifiers in OOPs are public, private, and protected.
Public members are accessible from outside the class.
Private members are only accessible within the class.
Protected members are accessible within the class and its subclasses.
Example: class MyClass { private int x; public void display() { System.out.println(x); }}
posted on 5 Oct 2024
I applied via Campus Placement
Easy level to crack in nqt..
Easy but the code must write from scratch.
I applied via Naukri.com and was interviewed in Mar 2021. There were 5 interview rounds.
I applied via Campus Placement and was interviewed in Oct 2020. There were 4 interview rounds.
Dictionary is a collection of key-value pairs in Python.
Keys must be unique and immutable.
Values can be of any data type.
Access values using keys.
Add or modify values using keys.
Use dict() constructor or {} to create a dictionary.
Example: {'name': 'John', 'age': 30}
Example: dict(name='John', age=30)
I applied via Campus Placement and was interviewed before Aug 2021. There was 1 interview round.
Data structure is a way of organizing and storing data in a computer so that it can be accessed and used efficiently.
Data structures are used to manage large amounts of data efficiently.
They can be implemented using arrays, linked lists, trees, graphs, and other techniques.
Examples include stacks, queues, hash tables, and binary search trees.
Choosing the right data structure for a particular problem is important for op...
Stack and Queue are used in real-time systems for managing tasks and events.
Stack is used for managing function calls, undo/redo operations, and backtracking.
Queue is used for managing events, scheduling tasks, and buffering data.
Real-time systems use both data structures for managing tasks and events in a time-sensitive manner.
Examples include task scheduling in operating systems, event handling in GUI applications, a
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