File Name: data structures in java interview questions and answers .zip
As per my experience good interviewers hardly plan to ask any particular question during your interview, normally questions start with some basic concept of the subject and later they continue based on further discussion and what you answer:. A data structure may contain different type of data items. Data structure availability may vary by programming languages. Commonly available data structures are list, arrays, stack, queues, graph, tree etc.
What are the major data structures used in the following areas : Rdbms, network data model and Hierarchical data model. If you are using c language to implement the heterogeneous linked list, What pointer type will you use?
It is not possible to use ordinary pointers for this. Void pointer is capable of storing pointer to any type as it is a generic pointer type. Recursion makes use of system stack for storing the return addresses of the function calls. What are the notations used in evaluation of arithmetic expressions using prefix and postfix forms? Insertion, selection, exchange, deletion. In tree construction which is the suitable efficient data structure? What is the bucket size, when the overlapping and collision occur at same time?
If there is only one entry possible in the bucket, when the collision occurs, there is no way to accommodate the colliding value. What are the types of collision Resolution techniques and the methods used in each of the type? In Rdbms, What is the efficient data structure used in the internal storage representation?
Rdbms — array i. If you are using c language to Implement the Heterogeneous linked list, What pointer type Will you use? What are the notations used In evaluation of arithmetic expressions using prefix and postfix forms?
Which of them could Have formed a full binary tree? With 13 nodes you can form a complete binary tree but not a full binary tree. Does the minimal spanning tree of a graph give the shortest distance between any 2 specified nodes? It consists of a sequence of? When you enter a new item on a linked list, you allocate the new node and then set the pointers to previous and next nodes.
When an element is removed front will be incremented by 1. In case it reaches past the last index available it will be reset to 0. If it is greater than end queue is empty. When an element is added end will be incremented by 1. If they are equal queue is full. In this, you dynamically allocate memory by using the new operator when declaring the array. In addition to organizing data stored in elements of an array, a multidimensional array can store memory addresses of data in a pointer array and an array of pointers.
However, the contents of a pointer is a memory address of another location of memory, which is usually the memory address of another variable, element of a structure, or attribute of a class. If you decide to store sign you get 7 bits for the number plus one bit for the sign. VoId is a type identifier which has not size. In array the items can be entered or removed in any order. We call this the next pointer. It is not necessary to specify the number of elements in a linked list during its declaration.
Insertions and deletions at any place in a list can be handled easily and efficiently. Your email address will not be published. What is data structure? List out the areas in which data structures are applied extensively? What is the data structures used to perform recursion? Insertion, selection, exchange, deletion sorting is not possible in deletion. What are the methods available in storing sequential files? What is the type of the algorithm used in solving the 8 queens problem?
In an aVl tree, at What condition the balancing is to be done? What is a spanning tree? Which is the simplest file structure? Whether linked list is linear or non-linear data structure? It is a collection of data elements called nodes, where each node is divided into three parts: an info field that contains the information stored in the node.
Right field that contain pointer to node on right side. Is It necessary to sort a file before searching a particular Item? If frequent use of the file is required for the purpose of retrieving specific element, it is more efficient to sort the file.
What are the Issues that Hamper the efficiency In sorting a file? Is any Implicit arguments are passed to a function When It Is called? What Is the data structures used to perform Recursion? What Is the type of the algorithm used In solving the 8 queens problem? In an avl tree, at What condition the balancing Is to be done? In general: there are 2n-1 nodes in a full binary tree. What Is a spanning tree? Rdbms array i. Which file contains the definition of member functions? How Is any data structure application Is classified among files?
What member function places a new node at the end of the linked list? What Is linked list? What does each entry In the link list called? How Is the front of the queue calculated? Why Is the Isempty member method called? Which process places data at the back of the queue? What Is the Relationship between a queue and Its underlying array? What Is a queue? What does Isempty member method determines? What method Removes the Value from the top of a stack?
What method Is used to place a Value onto the top of a stack? Run time memory allocation Is Known as? How do you assign an address to an element of a pointer array? Why do We use a multidimensional array? Is pointer a Variable? How many parts are there In a declaration statement? How memory Is Reserved using a declaration statement? What Is Impact of signed numbers on the memory?
What Is precision? What Is the difference between null and Void pointer? What Is the difference between array and stack? Whether linked list Is linear or non-linear data structure? What Is a node class?
When can you tell that a memory leak Will occur? How many different trees are possible With 10 nodes? How can I search for data In a linked list? Insertion of a node. State the different Ways of representing expressions? State the advantages of using Infix notations?
It is the mathematical way of representing the expression. It is easier to see visually which operation is done from first to last. What is a linked list? Posted on by Leave a comment. Leave a Reply Cancel reply Your email address will not be published.
Proper preparation is always advised. Data structures and algorithm questions are an important part of any programming job interview, especially one for Data Science and Java-based role. Sound knowledge of data structures and algorithms will help you stand apart from the herd. The following Data Structure interview questions will help you crack your next interview! The data structure is the way data is organized stored and manipulated for retrieval and access.
What are the major data structures used in the following areas : Rdbms, network data model and Hierarchical data model. If you are using c language to implement the heterogeneous linked list, What pointer type will you use? It is not possible to use ordinary pointers for this. Void pointer is capable of storing pointer to any type as it is a generic pointer type. Recursion makes use of system stack for storing the return addresses of the function calls. What are the notations used in evaluation of arithmetic expressions using prefix and postfix forms?
Algorithms. Java Algorithm And Data Structure Interview Questions and Programs Time complexity of the solution is O(n) as it traverses the tree only once.
So I am consolidating a list of java coding interview questions to create an index post. I will keep adding links to this post whenever I will add new java coding interview question. If you want to practice and improve data structure and algorithm programs, this post will be very helpful to you. I will recommend you to try it yourself first and then check the solution.
What is a Data Structure?
A list of most frequently asked Data Structure interview questions and answers are given below. The data structure is a way that specifies how to organize and manipulate the data. It also defines the relationship between them. Data Structures are the central part of many computer science algorithms as they enable the programmers to handle the data in an efficient way.
Great post Javin! Really helpful. I was recently asked following questions in interviews. I have found answers via Google search, but it would be great to know your comments on these questions. Heisenberg, Thanks for sharing those questions, they are real good. You can implement HashMap by using Array, because only provide constant time access, if you know index. Key is to writing hash function to minimize collision.
It seeks to find ways to make data access more efficient. When dealing with the data structure, we not only focus on one piece of data but the different set of data and how they can relate to one another in an organized manner. The key difference between both the data structure is the memory area that is being accessed. When dealing with the structure that resides the main memory of the computer system, this is referred to as storage structure. When dealing with an auxiliary structure, we refer to it as file structures. A binary search is an algorithm that is best applied to search a list when the elements are already in order or sorted.
Coding interviews are comprised mainly of data structure and algorithm-based questions as well as some of the logical questions such as, How do you swap two integers without using a temporary variable? There are a lot of computer science graduates and programmers applying for programming, coding, and software development roles at startups like Uber and Netflix. Once you have gone through these questions, you should feel confident enough to attend any telephonic or face-to-face interviews. Without any further ado, here is my list of some of the most frequently asked coding interview questions from programming job interviews :. An array is the most fundamental data structure, which stores elements at a contiguous memory location. It is also one of the darling topics of interviewers and you will hear a lot of questions about an array in any coding interview , e.
Notes on Data Structures and Programming Techniques. Introduction to Data Structure. Concise Notes on Data Structures and Algorithms. BCA-data-structures - Vijaya College. Data structures - Division of Computer Science and Engineering. Data structures and applications 15cs33 - Alpha College of Engineering.
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