MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -An array is a collection of similar data elements stored at contiguous memory locations. It is the simplest data structure where each data element can be accessed directly by only using its index number. In programming, most of the cases need to store a large amount of data of similar type.

Detailed explanation-2: -In computer science, array is a data type that represents a collection of elements (values or variables), each selected by one or more indices (identifying keys) that can be computed at run time during program execution. Such a collection is usually called an array variable or array value.

Detailed explanation-3: -Arrays can hold the only the same type of data in its collection i.e only homogeneous data types elements are allowed in case of arrays. Collection, on the other hand, can hold both homogeneous and heterogeneous elements. Arrays can hold both object and primitive type data.

Detailed explanation-4: -Because the mathematical concept of a matrix can be represented as a two-dimensional grid, two-dimensional arrays are also sometimes called “matrices". In some cases the term “vector” is used in computing to refer to an array, although tuples rather than vectors are the more mathematically correct equivalent.