Programming Fundamentals I Java Programming ICE0124ITB0121

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Programming Fundamentals I Java
Programming(ICE0124/ITB0121)
July 25th, 2005 Lab No. 4

• Tae-ho Hwang (fanteo.AT.icu.ac.kr)
• Eru Hojin Kim (eruhkim.AT.icu.ac.kr)

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4 Array practice
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Agenda for Today

• Understanding an array
• Practice together!
• Assign Homework 4

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Understanding an array

• Meaning of Array
• An Array is something like a list of variables
• Declaration of Array and example
• Base_Type Array_Name new Base_TypeLength
• char symbol new char80
• double reading new double100
• Species specimen new Species80

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Understanding an array (Contd)

• Array Terminology
• temperaturen2 32
• temperature is Array name
• n2 is Index (OR subscript)
• temperauturen2 is Indexed variable
• 32 is Value of Indexed variable

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Understanding an array (Contd)

• Initialization of an Array
• double reading 3.3, 15.8, 9.8
• OR,
• double reading new double3
• reading0 3.3
• reading1 15.8
• reading2 9.8

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Practice together!

• Store every odd number between 0 and 100 in an
  array and add them up.

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Practice together! (Contd)
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Practice together! (Contd)

• public class Lab4_1
• public static void main(String args)
• int numbers new int50
• int sum 0
• int i
• for (i0 i
• numbersi i21
• for (i0 i
• sum sum numbersi
• System.out.println(sum)

Lab4_1.java
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Practice together once again!

• Make a program to find Max or min value among 10
  inputs. Store 10 values in an array and do this.

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Practice together once again! (Contd)
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Practice together once again! (Contd)

• import java.util.Scanner
• public class Lab4_2
• public static void main(String args)
• Scanner input new Scanner(System.in)
• int numbers new int10
• int max, min
• int i
• for (i0 i
• System.out.printf("Enter the dth integer
  number ", i)
  
• numbersi input.nextInt()

Lab4_2.java
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Practice together once again! (Contd)

• max numbers0
• min numbers0
• for (i0 i
• if (numbersi max) max numbersi
• if (numbersi
• System.out.printf("Maximum d\nMinimum d",
  max, min)
  

Lab4_2.java
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Assign Homework 4

• Do Exercise 8.15. Deitel p.413

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Assign Homework 4 (Contd)

• Submission
• Compress the files to zip file (not alz) named
  like ICE0124_20050001_HW4.zip
  
• Mail subject should be likeICE0124 Homework 4
  by 20050001 ???
  
• Send to eruhkim.AT.icu.ac.kr
• Due date 2005-08-01 180000
• 15 penalty for 1-day late submission, 50
  penalty for 2-day late submission, zero point
  after 2-day late submission.
  
• Demerit mark for non-standardized submission