MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -In computing, a hash table, also known as hash map, is a data structure that implements an associative array or dictionary. It is an abstract data type that maps keys to values.

Detailed explanation-2: -Hash tables are a type of data structure in which the address/ index value of the data element is generated from a hash function. This enables very fast data access as the index value behaves as a key for the data value.

Detailed explanation-3: -What is Hashing in Data Structure? Hashing in the data structure is a technique of mapping a large chunk of data into small tables using a hashing function. It is also known as the message digest function. It is a technique that uniquely identifies a specific item from a collection of similar items.

Detailed explanation-4: -In computer science, an abstract data type (ADT) is a mathematical model for data types. An abstract data type is defined by its behavior (semantics) from the point of view of a user, of the data, specifically in terms of possible values, possible operations on data of this type, and the behavior of these operations.

Detailed explanation-5: -In terms of Java, both the class HashMap and the class Dictionary are implementations of the “Map” abstract data type.