Question

What does the command push( ) do and how is it used in arrays?

Answer 1

The push() command is used to append one or more elements to the end of an array, increasing its length. It is commonly utilized to dynamically populate an array within loops or during data processing.

Step-by-step explanation:

The push() command is used in many programming languages to add new elements to the end of an array. When you use push(), you can append one or more values to an array, thus increasing the array's length. This command is often used within loops or when processing data to dynamically populate an array with elements.

For example, suppose you have an array of numbers and you want to add a new number to this list. In JavaScript, you would use the push() method as follows:

var numbers = [1, 2, 3];
numbers.push(4);
// Now the numbers array will be [1, 2, 3, 4]

The number 4 has been added to the end of the numbers array. This is a common operation in many tasks that involve data collection or manipulation within arrays.