Upload
marquez-smail
View
226
Download
8
Tags:
Embed Size (px)
Citation preview
Data Structure
ListEka, Erick, Reddy
© Sekolah Tinggi Teknik Surabaya
1
Array» Fixed Size» Initialization: int[] abc = new int[10];
» Accessing by its index int tmp = abc[0];
2
© Sekolah Tinggi Teknik Surabaya
List» Dynamic Size» Initalization List<int> abc = new List<int>();
» Inserting abc.Add(123);
» Accessing by its index int tmp = abc[0];
3
© Sekolah Tinggi Teknik Surabaya
Array Vs List (1)
4
© Sekolah Tinggi Teknik Surabaya
» Size˃ ArrayFixed Size, but you can use Array.Resize˃ ListDynamic Size
Array Vs List (2)» Dimension˃ Array : Support multi dimensionExample :
˃ List : One DimensionBut we can make it multi too
5
© Sekolah Tinggi Teknik Surabaya
Array Vs List (3)» Function Built In» Like Sort, Reverse, IndexOf, Find, etc˃ ArrayUse System.Array function˃ ListUse its own function
6
© Sekolah Tinggi Teknik Surabaya
Performance Test» Prepare the object to test
» Performance test in inserting, updating, and select 1.000.000 element.
» Using Stopwatch class from System.Diagnostics.
7
© Sekolah Tinggi Teknik Surabaya
Insert 1.000.000 Element
8
© Sekolah Tinggi Teknik Surabaya
» List is slower than Array when inserting, because List resize its length first
Inserting Script
9
© Sekolah Tinggi Teknik Surabaya
Update 1.000.000 Element
10
© Sekolah Tinggi Teknik Surabaya
» When updating its element, list is much faster than array.
Updating Script
11
© Sekolah Tinggi Teknik Surabaya
Select 1.000.000 Element
12
© Sekolah Tinggi Teknik Surabaya
» List is 4 times faster than array when selecting its element.
Selecting Script
13
© Sekolah Tinggi Teknik Surabaya
When We Use Array ?» Knowing its size, and its size rarely
change» Just do basic thing with its element
14
© Sekolah Tinggi Teknik Surabaya
When We Use List ?» Wanting a dynamic array» Need a lot of function built in˃ Need to remove one or more of its
element˃ AddRange function
15
© Sekolah Tinggi Teknik Surabaya
Exercise» Let’s create List class with array !
16
© Sekolah Tinggi Teknik Surabaya
Reference» Arrays Tutorial,
http://msdn.microsoft.com/en-us/library/aa288453(v=vs.71).aspx, accessed on April 5th 2014.
» C# List, http://www.dotnetperls.com/list, accessed on April 5th 2014.
17
© Sekolah Tinggi Teknik Surabaya