Can we store elements with different data types in a single array?

Can we store elements with different data types in a single array?

Yes we can store different/mixed types in a single array by using following two methods: Method 1: using Object array because all types in . We can use Add() method of ArrayList class to add different data types to the ArrayList collection.

Why is an array called a data structure?

Array is called data structure because it also helps in organizing and efficiently using a large number of data of a particular type. Like in case we need to store and manage the roll numbers of fixed number of students in a class then we consider to use an array of integer type or an array of type short.

Why do array elements have to be of the same type?

If objects are of different types and consequently different size, the above mentioned formula won’t work. Yes, you are right. All that is required for constant time random access. Also, you can have an array of void pointers if you want to store different data types in a single array.

Do the elements of a one dimensional array have to be of?

You must understand that any Array data structure is meant to be stored as contiguous block of memory, be it of anything, but of the same data type. With primitive types, it is the contiguous block of actual values, i.e., int array will have each int occupy 4 bytes, array of long will have each occupy 8 bytes, and so on.

What do you need to know about an array?

Array Basics. Definition. An array is an indexed collection of data elements of the same type. 1) Indexed means that the array elements are numbered (starting at 0). 2) The restriction of the same type is an important one, because arrays are stored in consecutive memory cells. Every cell must be the same type (and therefore, the same size).

What’s the difference between an array and a vector?

Arrays vs. Vectors. An array is a homogeneous data structure (elements have same data type) that stores a sequence of consecutively numbered objects–allocated in contiguous memory. Each object of the array can be accessed by using its number (i.e., index ). When you declare an array, you set its size.