• temporary storage
  • use Queue or Stack
    • Queue is FIFO
    • Stack is LIFO
• Accessing element with base "0"  index
  • ArrayList and String{} that StringCollection
• Accessing via Key
  • Hashtable, sSortedList, STringDisconary
• Both with zero  index and key based array
  • NamedObjectCollectionBase, NameValueColectionBase
• Separating elements and store separate
  • Hashtable with value or Key
  • SortedList by value
• Fast Seaching
  • ListDictionary
• Only String Collection
  • Collections, StringCollection, StringDictionary.