Question

The index (subscript) of the last element of an array ar[ ] is ______.

Options

• ar.length( )

• ar[ ].length

• ar.length()-1

• ar.length-1

Answer 1

The index (subscript) of the last element of an array ar[ ] is ar.length-1.

Explanation:

ar.length gives the last position, and -1 gives the actual index, as the index of the array starts from 0 to n-1.