8.9. Arrays

An array is a simple and efficient data structure used in virtually all programming languages. Arrays are used principally to provide constant-time access to a fixed-size collection of primitive datatypes or objects and are a way of referring to many distinct values by a single identifier. Arrays are implemented as real objects with the following properties:

  • Their length can be determined through the length field.

  • They can be assigned to variables of type Object as well as to variables of their specific type.

  • Arrays are efficiently passed to methods by reference just like any other Object.

Array indexing is zero-based, so elements in an array of 10 values can be referred to with subscripts from 0 through 9. Arrays are normally created ...

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