Chapter 3. ADTs unsorted List and Sorted List. List Definitions. Linear relationship Each element except the first has a unique predecessor, and each element except the last has a unique successor. Length The number of items in a list; the length can vary over time. List Definitions.
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ADTs unsorted List and Sorted List
Linear relationship Each element except the first has a unique predecessor, and each element except the last has a unique successor.
Length The number of items in a list; the length can vary over time.
Unsorted list A list in which data items are placed in no particular order; the only relationship between data elements is the list predecessor and successor relationships.
Sorted list A list that is sorted by the value in the key; there is a semantic relationship among the keys of the items in the list.
Key The attributes that are used to determine the logical order of the list.
public boolean isFull ( )
// Returns whether this lis is full
return (list.length == numItems);
Ways we could reuse the code of the Unsorted List ADT to create the code for the Sorted List ADT:
Big-O Notation A notation that expresses computing time (complexity) as the term in a function that increases most rapidly relative to the size of a problem
f(N) = N4 + 100N2 + 10N + 50
then f(N) is 0(N4).
N represents the size of the problem.
Generic Data Type A type for which the operations are defined but the types of the items being manipulated are not
To Create a sorted list of strings use either of its constructors:
SortedList list1 = new SortedList();
SortedList list2 = new SortedList (size);
Declare at least one object of class ListString
Instantiate ListString objects and place them on the list.
aString = new ListString(“Amy”);