Chapter 14: Arrays

• What is an array in programming?

  A continuous block of memory for elements
• Why are arrays considered a transportable datatype?

  They can be passed between different programming languages
• What is the typical dimensionality of arrays?

  Most arrays are one dimensional
• How can multi-dimensional arrays be useful in game development?

  They can represent 2D tile layouts effectively
• What does the dimension of an array refer to?

  The number of indices to find an element
• What is the significance of the array type definition?

  It specifies the element type and uses []
• Can the length of an array change after creation?

  No, the length is fixed after creation
• How can the length of an array be retrieved?

  Using the length field
• What notation is used to specify positions in an array?

  Indexer notation with []
• How can arrays be initialized in C#?

  Using initialization syntax or collection expression syntax

  
• What is the formal parameter definition for array arguments?

  It cannot specify the expected length of the array
• How can the length of an array argument be found?

  Using the Length property
• What does the String.Split function return?

  A one dimensional array of strings
• What happens when a program starts in C#?

  The static void Main method is called

  
• How are command arguments passed to a program?

  As an array of strings
• What is the structure of a multi-dimensional array?

  It requires multiple indices to identify elements
• How is the type definition of a multi-dimensional array structured?

  It uses commas to separate index positions
• How is the number of elements in a two-dimensional array calculated?

  By multiplying the lengths of both dimensions
• What is a key difference between multi-dimensional arrays and jagged arrays?

  Jagged arrays can have sub-arrays of different lengths
• What is the purpose of the params keyword in C#?

  To allow variable number of arguments in a method

  
• What does the Array class in .NET provide?

  Utility methods for array manipulation
• What can the Array class do with arrays?

  Copy, search, clone, and resize arrays
• What is the result of resizing an array in .NET?

  A new array is allocated with copied items
• What is the notation for collection initializers?

  Curly braces {}
• What is the purpose of the spread element in collections?

  To flatten a list of lists into a single list
• What are the key features of single-dimensional arrays?

  • Reference type
  • Fixed length after creation
  • Length can be retrieved using Length property
  • Supports foreach iterations
  • Can be initialized using different syntaxes
• What are the characteristics of multi-dimensional arrays?

  • Requires multiple indices for access
  • Defined with commas in type definition
  • Length is the product of dimensions
  • Can be iterated using foreach
• What are the advantages of jagged arrays?

  • Allows sub-arrays of different lengths
  • Reduces memory usage for varying lengths
  • Individual items can be accessed and modified
• What are the utility methods provided by the Array class?

  • Copying arrays
  • Searching for elements
  • Cloning arrays (shallow copy)
  • Resizing arrays (new allocation)
• What are the differences between collection initializers and collection expressions?

  • Collection initializers use curly braces {}
  • Collection expressions use square brackets []
  • Both are considered equivalent in this context