Test: Arrays - 1 - Computer Science Engineering (CSE) MCQ

Array contains elements only of the same type.

Note that int arr[]; is declaration whereas int arr[] = new int[3]; is to instantiate an array.

Arrays store elements of the same data type and present in continuous memory locations.

Since there are 15 int elements and each int is of 4bytes, we get 15*4 = 60bytes.

Elements in an array are accessed randomly. In Linked lists, elements are accessed sequentially.

This is the syntax to initialize an array in C.

The syntax to declare multidimensional array in java is either int[][] arr; or int arr[][];

Whenever a particular memory location is referred to, it is likely that the locations nearby are also referred, arrays are stored as contiguous blocks in memory, so if you want to access array elements, spatial locality makes it to access quickly.

Arrays are of fixed size. If we insert elements less than the allocated size, unoccupied positions can’t be used again. Wastage will occur in memory.

In general, Array Indexing starts from 0. Thus, the index of the first element in an array is 0.