2.1.14

Arrays

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Arrays

Arrays are really useful when you have access to large amounts of related data, but you don't want to store in multiple variables.

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Arrays

  • An array is a data structure that stores a fixed number of values under a single identifier.
  • The values must be of the same type.
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Array elements

  • Each piece of data inside an array is called an element.
  • Each element has an index, which is its position within the array.
  • We start counting the indices from 0.
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Arrays in pseudocode

  • An array of ten items can be created using the following syntax:
    • array name_of_array[10]
  • Values can be assigned as follows:
    • name_of_array[0] = "Hello"
  • Values can be accessed as follows:
    • print(name_of_array[0])

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1Computational Thinking & Algorithms

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