Can I have an array of arrays?

Can I have an array of arrays?

Java builds multi-dimensional arrays from many one-dimensional arrays, the so-called “arrays of arrays” approach. There are a couple of interesting consequences of this: Rows may be different sizes. Also, each row is an object (an array) that can be used independently.

Can you have a list of arrays?

To create an array list in Java, you declare an ArrayList variable and call the ArrayList constructor to instantiate an ArrayList object and assign it to the variable: You can optionally specific a capacity in the ArrayList constructor: ArrayList friends = new ArrayList(100);

Can I have an array of arrays in C?

An element of an array in C can be another array (and the element of that array can be another array). Such arrays of arrays are often called “multidimensional arrays”, but they really are arrays of arrays.

Can you have an array of arrays C++?

Multidimensional Arrays in C / C++ In C/C++, we can define multidimensional arrays in simple words as array of arrays. Data in multidimensional arrays are stored in tabular form (in row major order).

What is difference between array and list?

Array: An array is a vector containing homogeneous elements i.e. belonging to the same data type….Output :

List Array
Can consist of elements belonging to different data types Only consists of elements belonging to the same data type

Is an array the same as a list?

Differences. The main difference between these two data types is the operation you can perform on them. Also lists are containers for elements having differing data types but arrays are used as containers for elements of the same data type.

Which array is not possible in C?

Discussion Forum

Que. Which of the following is not possible statically in C?
b. Rectangular Array
c. Cuboidal Array
d. Multidimensional Array
Answer:Jagged Array

How to check if an array contains a specific value?

To check if an array contains a value matching a condition, use the EXISTS function with UNNEST. To scan an array for a specific value, use the IN operator with UNNEST. The following example returns true if the array contains the number 2.

How to write an array of a specific type?

To declare a specific data type for an array, use angle brackets ( < and > ). For example: Arrays of most data types, such as INT64 or STRING, don’t require that you declare them first. You can write an empty array of a specific type using ARRAY [].

How to declare a type of an array in SQL?

To declare a specific data type for an array, use angle brackets (< and >). For example: SELECT ARRAY [1, 2, 3] as floats; Arrays of most data types, such as INT64 or STRING, don’t require that you declare them first. SELECT [1, 2, 3] as numbers; You can write an empty array of a specific type using ARRAY [].

Is it possible to create an array in BigQuery?

Working with Arrays in Standard SQL. In BigQuery, an array is an ordered list consisting of zero or more values of the same data type. You can construct arrays of simple data types, such as INT64, and complex data types, such as STRUCTs. The current exception to this is the ARRAY data type: arrays of arrays are not supported.