Anandpushp Technologies Backend Developer Interview Questions and Answers

Q1. Typewriting knowledge
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Q2. Laptop having or not
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6 questions to be dones in 1 hr 5 mins

No of Questions : 4 questions
Difficulty : Difficult
Topics : Sieve of eratosthenis, DP, Hashing

Q1. Search in the rotated Sorted array. (Binary Search - pivot)
Ans. 
Search for an element in a rotated sorted array using binary search with pivot.
• Find the pivot element using binary search.

• Compare the target element with the first element of the array to determine which half to search.

• Perform binary search on the selected half of the array.

• Repeat until the target element is found or the array is exhausted.
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Q2. Sort the array which consists of 0's, 1's , 2's. (Two Pointer approach)
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Sort an array of 0's, 1's, and 2's using two pointer approach.
• Initialize two pointers, one at the beginning and one at the end of the array.

• Traverse the array and swap 0's to the beginning and 2's to the end using the pointers.

• Stop when the pointers meet or cross each other.
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Q3. Tell me about id selector in CSS
Ans. 
ID selector is used to select an element with a specific ID attribute in CSS.
• ID selector is denoted by '#' followed by the ID name.

• ID should be unique on a page.

• ID selector has higher specificity than class selector.

• Example: #header { color: blue; }
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Q1. Differences between ShallowCopy & DeepCopy
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ShallowCopy copies only the reference of an object while DeepCopy creates a new object with a new reference.
• ShallowCopy creates a new reference to the same object, so changes made to the copy will reflect in the original object.

• DeepCopy creates a new object with a new reference, so changes made to the copy will not reflect in the original object.

• ShallowCopy is faster and less memory-intensive than DeepCopy.

• DeepCopy is ...read more
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Q2. Define Copy Constructor
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Copy constructor is a special constructor that creates a new object by copying an existing object.
• It is used to create a new object with the same values as an existing object.

• It takes an object of the same class as a parameter.

• It is automatically called when a new object is created from an existing object.

• It creates a deep copy of the object, meaning that all the member variables are copied.

• Example: class MyClass { pub...read more
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Q3. Define Operator overloading
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Operator overloading allows operators to have different meanings based on the context of their usage.
• Operator overloading is a feature in object-oriented programming languages.

• It allows operators to be redefined for custom classes.

• For example, the '+' operator can be overloaded to concatenate strings or add numbers.

• It can improve code readability and reduce the amount of code needed for certain operations.
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Q4. Differences between struct and class
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Struct is a value type while class is a reference type in C#.
• Structs are stored on the stack while classes are stored on the heap.

• Structs cannot be inherited while classes can be inherited.

• Structs do not support destructors while classes do.

• Structs are used for small data structures while classes are used for larger, more complex objects.

• Example of struct: struct Point { public int X; public int Y; }

• Example of class: c...read more
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Q5. DSA : Search an element in infinite soted array
Ans. 
Search an element in an infinite sorted array using binary search.
• Initialize low as 0 and high as 1.

• Double the high index until arr[high] is greater than the target element.

• Perform binary search between low and high indexes.
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3 coding questions of moderate difficult

Q1. Coding questions asked in coding round
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Its was fully coding test using METTL platform in that there is only 1 session we need to attend having 6 questions all are Coding only. We don't need to complete all we can complete any of the question the time given was 1hr 30min in this i try to complete atleast 3 questions

Q1. In Technical interview they ask about Any programming language u prefer they will ask on that but most of java and paython is mandatory and more questions on java itself and about your project and all
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Q1. In HR round self introduction and about project discussion and they ask what they want to know about u and u r way of thinking about job
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It had 2 programming questions and 30 aptitude questions
it

Q1. Introduce yourself, educational background
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Q2. What languages are you familiar with
Ans. 
I am familiar with several programming languages including Java, Python, and C++.
• Proficient in Java and Python

• Familiar with C++ and JavaScript

• Experience with SQL and HTML/CSS

• Comfortable with object-oriented programming and data structures

• Continuously learning and exploring new languages and technologies
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Six coding questions to be solved within an hour. The coding questions were standard aptitude based and did not include any complex topics like Dynamic Programming or trees in my case.

Q1. I had to solve a problem. Given an expression involving operators and operands with parentheses, convert it to postfix expression. I used the stack data structure.
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Q1. A puzzle question
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Online coding test having basic problems and some aptitude problem.

Q1. Interviewer will ask opps and 2 basic coding problem 2 aptitude problem if you mention any technology in resume then ask about technology and projects
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Q2. What is opps ?
Ans. 
OOPs stands for Object-Oriented Programming, a programming paradigm based on the concept of objects.
• OOPs focuses on creating objects that contain both data and methods to manipulate that data.

• Encapsulation, inheritance, polymorphism, and abstraction are key principles of OOPs.

• Examples of OOPs languages include Java, C++, and Python.
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Q3. What is singleton class ?
Ans. 
A singleton class is a class that can only have one instance created and provides a global point of access to that instance.
• Singleton classes are often used for logging, caching, database connections, and thread pools.

• They typically have a private constructor to prevent instantiation from other classes.

• They provide a static method to access the single instance, which is created if it doesn't exist yet.
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