indexOf (array)

indexOf (array) Task Purpose

The arrayIndexOf task is used to return the first index (position) at which a given element can be found in the array. The task returns -1 if the element is not found.

Potential Use Case

Suppose you have a list of email addresses and want to determine if an email record is listed in the correct department. The arrayIndexOf task can be used to check whether the email exists or not. It will return the index number (position) where the email occurs. If the email is not found in the list, then your return result would be -1.

Properties

Example

In this IAP example:

• The arr variable is statically specified as ["Apple","Pear","Banana"].

• The searchElement reference variable is Banana.

• The fromIndex variable will default to 0.

• The index result will return 2 upon output, indicating that the searchElement ("Banana") is located at index position 2 in the array.

  Note: The first element has position 0, the second element has position 1, and so on.