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OutlineMethod OverLoading
printf method
Arrays
Declaring and Using Arrays
Arrays of Objects
Array as Parameters
Variable Length Parameter Lists
split() Method from String Class
Integer & Double Wrapper Classes
Two-Dimensional Arrays
Copyright © 2012 Pearson Education, Inc.
Method Overloading• Method overloading is the process of giving a
single method name multiple definitions in a class
• If a method is overloaded, the method name is not sufficient to determine which method is being called
• The signature of each overloaded method must be unique
• The signature includes the number, type, and order of the parameters
Copyright © 2012 Pearson Education, Inc.
Method Overloading• The indexOf method of String class is overloaded
Copyright © 2012 Pearson Education, Inc.
int indexOf(char ch)
Returns the index of the first occurrence of char ch in this string.
Returns -1 if not matched.
int indexOf(char ch, int fromIndex)
Returns the index of the first occurrence of char ch in this string
after fromIndex. Returns -1 if not matched.
int indexOf(String s)
Returns the index of the first occurrence of String cs in this string.
Returns -1 if not matched.
int indexOf(String s, int fromIndex)
Returns the index of the first occurrence of String s in this string
after fromIndex. Returns -1 if not matched.
Method Overloading• The abs method of Math class is overloaded
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double abs(double d) float abs(float f) int abs(int i) long abs(long l)
Method Overloading• The compiler determines which method is being invoked by
analyzing the parameters
float tryMe(int x){ return x + .375;}
float tryMe(int x, float y){ return x*y;}
result = tryMe(25, 4.32)
Invocation
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Overloading Methods
• The return type of the method is not part of the signature.
• That is, overloaded methods cannot differ only by their return type
• Constructors can be overloaded
• Overloaded constructors provide multiple ways to initialize a new object
– Recall PrintWriter constructors
Copyright © 2012 Pearson Education, Inc.
OutlineMethod OverLoading
printf method
Arrays
Declaring and Using Arrays
Arrays of Objects
Array as Parameters
Variable Length Parameter Lists
split() Method from String Class
Integer & Double Wrapper Classes
Two-Dimensional Arrays
Copyright © 2012 Pearson Education, Inc.
System.out.printf ("format string", data)• The PrintWriter class has a printf method
compatible with the fprintf method in C or Matlab.• In the format string you can use format specifiers
as well as leading text for the data you want to print.
• There should be exactly one data for each format specifier other than %n
Copyright © 2012 Pearson Education, Inc.
Common Format Specifiers
• %d for integers
• %f for floating-point numbers
• %e for floating-point numbers (scientific notation)
• %s for string
• %c for char
• %b for boolean
• %n to advance to next lineCopyright © 2012 Pearson
Education, Inc.
Additional characters for format specifiers
• First of all, you can specify the length of data. If data doesn't fit, the space reserved is extended. Otherwise, numbers are aligned right, and strings are aligned left. To override this, you can additionally use a minus character.
• For numbers you can use zero character to fill the gap with 0's instead of blanks.
• For floating-point numbers you can use .digit to specify decimal places to digit.
• See Example_printf.java
Copyright © 2012 Pearson Education, Inc.
OutlineMethod OverLoading
printf method
Arrays
Declaring and Using Arrays
Arrays of Objects
Array as Parameters
Variable Length Parameter Lists
split() Method from String Class
Integer & Double Wrapper Classes
Two-Dimensional Arrays
Copyright © 2012 Pearson Education, Inc.
Arrays• Let’s say we need to hold the temperature values of each
day in Ankara in the past year
• Hard way: Create 365 different variables to hold each day’s temperature
double tempDay1, tempDay2, …, …,tempDay365;
Ughhhhh!!!
Very difficult to even declare, use and manipulate!
• Easy way: use an array to hold all days temperatures
Copyright © 2012 Pearson Education, Inc.
How to Declare an Array• Create an array variable called temperatures
• Declared as follows:
double[] temperatures = new double[365];
• This sets up a location in memory for 365 double variables at once
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Arrays Key Features• Arrays provide an easy way to hold related variables at once
(for example, temperature for the past year, gas prices for the last 30 days)
• It has some ordering, we can refer to array elements based on that ordering
• Homogenous, all data within a single array must share the same data type (for example, you can create an array of integer or boolean values, but not both)
• The size of an array is fixed once it is created.
Copyright © 2012 Pearson Education, Inc.
Array Elements Type• The element type can be a primitive type or an object
reference
• Therefore, we can create an array of integers, an array of characters, an array of boolean, an array of String objects
Copyright © 2012 Pearson Education, Inc.
Declaring Arrays• First you declare an array reference variable
int [] myFirstArray; //declares an array //variable for
ints
• Then you instantiate the array, that is allocate the necessary amount of memory for the array and let the variable hold the starting address of the array.
myFirstArray = new int [10]; //allocates memory
• We can combine the declaration and instantiation lines into one line as follows:
int [] myFirstArray = new int [10];
Declaring Arrays• The scores array could be declared as follows:
int[] scores = new int[10];
• The type is int (an array of integers)
• The name of the array is scores
• The size of the array is 10
• All positions of the new array will automatically be initialized to the default value for the array’s type.
Copyright © 2012 Pearson Education, Inc.
0 0 0 0 0 0 0 0 0 0
Declaring Arrays• Some other examples of array declarations:
int[] weights = new int[2000];
double[] prices = new double[500];
boolean[] flags;flags = new boolean[20];
char[] codes = new char[1750];
Copyright © 2012 Pearson Education, Inc.
Arrays are Objects• In Java, the array itself is an object that must be
instantiated• Another way to depict the scores array:
scores 79
87
94
82
67
98
87
81
74
91Copyright © 2012 Pearson Education, Inc.
The name of the arrayis an object reference
variable
Array Elements• Refers to the individual items represented by the
array. For example,– an array of 10 integers is said to have 10 elements– an array of 5 characters has 5 elements– and so on…
Array Index• Refers to one particular element’s position number in the array or
more formally, as a subscript
int[] scores = new int[10];
Copyright © 2012 Pearson Education, Inc.
0 1 2 3 4 5 6 7 8 9
89 91 84 62 67 98 87 81 74 91
An array of size N is indexed from 0 (zero) to N-1
scores
The entire arrayhas a single name
Each value has a numeric index
This array holds 10 values that are indexed from 0 to 9
Array Element
• A particular value in an array is referenced using the array name followed by the index in brackets
scores[2]
refers to the value 94 (the 3rd value in the array)
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0 1 2 3 4 5 6 7 8 9
79 87 94 82 67 98 87 81 74 91
BasicArray.javaThe following example demonstrates the use of indices.
See BasicArray.java
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Arrays• An array element can be assigned a value, printed,
or used in a calculation:
scores[2] = 89;
scores[first] = scores[first] + 2;
mean = (scores[0] + scores[1])/2;
System.out.println ("Top = " + scores[5]);
Copyright © 2012 Pearson Education, Inc.
See Array2.java
Array Naming Considerations• The rules for naming variables apply when selecting array
variable names
– Composed of letter, digit, $ and underscore characters– Cannot start with a digit– Begins with a smallcase letter by convention
Copyright © 2012 Pearson Education, Inc.
Array Length and Bounds• Once an array is created, it has a fixed size
• An index used in an array reference must specify a valid element.
• That is, if the array length is N, the index value must be in range 0 to N-1
• You will get the run-time error, ArrayIndexOutOfBoundsException if you use an invalid index
Copyright © 2012 Pearson Education, Inc.
Bounds Checking• For example, if the array codes can hold 100
values, it can be indexed from 0 to 99
• It’s common to introduce off-by-one errors when using arrays:
for (int index=0; index <= 100; index++)codes[index] = index*50 + epsilon;
problem
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Array Length• Each array object has a public constant (not a method)
called length that stores the size of the array
• It is referenced using the array name:
scores.length
• length holds the number of elements (not the largest index!)
• Length is not a method so there is no parenthesis at the end unlike String class length() method
Copyright © 2012 Pearson Education, Inc.
Copyright © 2012 Pearson Education, Inc.
//********************************************************************// ReverseOrder.java Author: Lewis/Loftus//// Demonstrates array index processing.//********************************************************************
import java.util.Scanner;
public class ReverseOrder{ //----------------------------------------------------------------- // Reads a list of numbers from the user, storing them in an // array, then prints them in the opposite order. //----------------------------------------------------------------- public static void main (String[] args) { Scanner scan = new Scanner (System.in);
double[] numbers = new double[10];
System.out.println ("The size of the array: " + numbers.length);
continue
Copyright © 2012 Pearson Education, Inc.
continue
for (int index = 0; index < numbers.length; index++) { System.out.print ("Enter number " + (index+1) + ": "); numbers[index] = scan.nextDouble(); } System.out.println ("The numbers in reverse order:");
for (int index = numbers.length-1; index >= 0; index--) System.out.print (numbers[index] + " ");
System.out.println (); }}
Copyright © 2012 Pearson Education, Inc.
continue
for (int index = 0; index < numbers.length; index++) { System.out.print ("Enter number " + (index+1) + ": "); numbers[index] = scan.nextDouble(); } System.out.println ("The numbers in reverse order:");
for (int index = numbers.length-1; index >= 0; index--) System.out.print (numbers[index] + " "); }}
Sample RunThe size of the array: 10Enter number 1: 18.36Enter number 2: 48.9Enter number 3: 53.5Enter number 4: 29.06Enter number 5: 72.404Enter number 6: 34.8Enter number 7: 63.41Enter number 8: 45.55Enter number 9: 69.0Enter number 10: 99.18The numbers in reverse order:99.18 69.0 45.55 63.41 34.8 72.404 29.06 53.5 48.9 18.36
Array Initializers• An array initializer combines the declaration,
creation, and initialization of an array in one statement using the following syntax:
elementType [] arrayReferenceVariable = {value0, value1,... , valueK};
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Initializer Lists• An initializer list can be used to instantiate and fill
an array in one step
• The values are delimited by braces and separated by commas
• Examples:
int[] units = {147, 323, 89, 933, 540, 269, 97, 114, 298, 476};
char[] grades = {'A', 'B', 'C', 'D', ’F'};
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Initializer Lists• Note that when an initializer list is used:
– the new operator is not used– no size value is specified
• The size of the array is determined by the number of items in the list
• An initializer list can be used only in the array declaration
• See Primes.java
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Copyright © 2012 Pearson Education, Inc.
//********************************************************************// Primes.java Author: Lewis/Loftus//// Demonstrates the use of an initializer list for an array.//********************************************************************
public class Primes{ //----------------------------------------------------------------- // Stores some prime numbers in an array and prints them. //----------------------------------------------------------------- public static void main (String[] args) { int[] primeNums = {2, 3, 5, 7, 11, 13, 17, 19}; System.out.println ("Array length: " + primeNums.length);
System.out.println ("The first few prime numbers are:");
for(int i=0; i < primeNums.length; i++){
System.out.print (primeNums[i] + " "); } }}
Copyright © 2012 Pearson Education, Inc.
//********************************************************************// Primes.java Author: Lewis/Loftus//// Demonstrates the use of an initializer list for an array.//********************************************************************
public class Primes{ //----------------------------------------------------------------- // Stores some prime numbers in an array and prints them. //----------------------------------------------------------------- public static void main (String[] args) { int[] primeNums = {2, 3, 5, 7, 11, 13, 17, 19}; System.out.println ("Array length: " + primeNums.length);
System.out.println ("The first few prime numbers are:");
for(int i=0; i < primeNums.length; i++){
System.out.print (primeNums[i] + " "); } }}
OutputArray length: 8The first few prime numbers are:2 3 5 7 11 13 17 19
Example:Find the frequency of the result of throwing a dice 6000 times
•See RollDice.java
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for-each loops• for-each loop (enhanced for loop) enables you to traverse
the array sequentially without using an index variable
for (double d: array)
System.out.println(d);
is equivalent to
for (int i = 0; i < array.length; i++){
double d = array [i];
System.out.println(d);
}
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Another exampleint sum = 0;
int[] list = {1, 2, 3};
for (int value : list){
sum += value;
}
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sumlist
value
01 2 3
1
Another exampleint sum = 0;
int[] list = {1, 2, 3};
for (int value : list){
sum += value;
}
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sumlist
value
11 2 3
2
Another exampleint sum = 0;
int[] list = {1, 2, 3};
for (int value : list){
sum += value;
}
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sumlist
value
31 2 3
3
Another exampleint sum = 0;
int[] list = {1, 2, 3};
for (int value : list){
sum += value;
}
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sumlist
61 2 3
Example • InitializerList.java demonstrates the
usage of array initializers and for-each loops.
Copyright © 2012 Pearson Education, Inc.
OutlineMethod OverLoading
printf method
Arrays
Declaring and Using Arrays
Arrays of Objects
Array as Parameters
Variable Length Parameter Lists
split() Method from String Class
Integer & Double Wrapper Classes
Two-Dimensional Arrays
Copyright © 2012 Pearson Education, Inc.
Arrays of Objects• The elements of an array can be object references
• The following declaration reserves space to store 5 references to String objects
String[] array = new String[5];
• It does NOT create the String objects themselves
• Initially an array of objects holds null references
• Each object stored in an array must be instantiated separately
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Arrays of Objects• The array array when initially declared:
• At this point, the following line of code would throw a NullPointerException:
System.out.println(array[0].length() );
• See ArrayOfStrings.java
array -
-
-
-
-
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Arrays of Objects• Keep in mind that String objects can be created
using literals
• The following declaration creates an array object called verbs and fills it with five String objects created using string literals
String[] verbs = {"play", "work", "eat", "sleep", "run"};
See StringArr.java
Copyright © 2012 Pearson Education, Inc.
OutlineMethod OverLoading
printf method
Arrays
Declaring and Using Arrays
Arrays of Objects
Array as Parameters
Variable Length Parameter Lists
split() Method from String Class
Integer & Double Wrapper Classes
Two-Dimensional Arrays
Copyright © 2012 Pearson Education, Inc.
Arrays as Parameters• An entire array can be passed as a parameter to a
method
• Like any other object, the reference to the array is passed, making the formal and actual parameters aliases of each other
• Therefore, changing an array element within the method changes the original
• An individual array element can be passed to a method as well, in which case the type of the formal parameter is the same as the element type
Copyright © 2012 Pearson Education, Inc.
Examples of Array as ParametersArray4.java
MakeHot.java
ArrParametersAndReturns.java
Copyright © 2012 Pearson Education, Inc.
OutlineMethod OverLoading
printf method
Arrays
Declaring and Using Arrays
Arrays of Objects
Array as Parameters
Variable Length Parameter Lists
split() Method from String Class
Integer & Double Wrapper Classes
Two-Dimensional Arrays
Copyright © 2012 Pearson Education, Inc.
Variable Length Parameter Lists• Suppose we wanted to create a method that
processed a different amount of data from one invocation to the next
• For example, let's define a method called average that returns the average of a set of integer parameters
// one call to average three valuesmean1 = average (42, 69, 37);
// another call to average seven valuesmean2 = average (35, 43, 93, 23, 40, 21, 75);
Copyright © 2012 Pearson Education, Inc.
Variable Length Parameter Lists• Using special syntax in the formal parameter list, we
can define a method to accept any number of parameters of the same type
• For each call, the parameters are automatically put into an array for easy processing in the method
public double average (int ... list){ // whatever} element
typearrayname
Indicates a variable length parameter list
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Variable Length Parameter Lists
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public double average (int ... list){ double result = 0.0;
if (list.length != 0) { int sum = 0; for (int num : list){ sum += num;
} result = (double)sum / list.length; }
return result;}
Example
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Write method called distance that accepts a variable number of doubles (which each represent the distance of one leg of a trip) and returns the total distance of the trip.
See Trip.java
Variable Length Parameter Lists• A method that accepts a variable number of parameters can
also accept other parameters, but variable number of parameters can exist only once and as the last parameter
• The following method accepts an int, a String object, and a variable number of double values into an array called nums
public void test (int count, String name, double ... nums){ // whatever}
Copyright © 2012 Pearson Education, Inc.
OutlineMethod OverLoading
printf method
Arrays
Declaring and Using Arrays
Arrays of Objects
Array as Parameters
Variable Length Parameter Lists
split() Method from String Class
Integer & Double Wrapper Classes
Two-Dimensional Arrays
Copyright © 2012 Pearson Education, Inc.
split() Method from String Class public String[] split(String delimiter)•Method takes a String delimiter
•Returns a String array
•The split method in the String class returns an array of strings consisting of the substrings split by the delimiters.
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Aaa bbb ccc
String str = "Aaa, bbb, ccc";
String[] arr = str.split(", ");
arr =
delimiter
Examples: String str = "Java#HTML#Perl“;
String [] tokens = str.split("#");
for (String token: tokens)
System.out.println (token.toUpperCase());
Copyright © 2012 Pearson Education, Inc.
Examples: String str = “Java#HTML#Perl”;
String [] tokens = str.split("#");
for (String token: tokens)
System.out.println (token.toUpperCase());
Generates the following output:
JAVA
HTML
PERL
Copyright © 2012 Pearson Education, Inc.
Examples: String str = "Hi How are you?";
String [] tokens = str.split("\t");
for (int i=0; i < tokens.length; i++)
System.out.println (tokens[i]);
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Examples: String str = "Hi How are you?";
String [] tokens = str.split("\t");
for (int i=0; i < tokens.length; i++)
System.out.println (tokens[i]);
Generates the following output:
Hi
How are you?
Copyright © 2012 Pearson Education, Inc.
OutlineMethod OverLoading
printf method
Arrays
Declaring and Using Arrays
Arrays of Objects
Array as Parameters
Variable Length Parameter Lists
split() Method from String Class
Integer & Double Wrapper Classes
Two-Dimensional Arrays
Copyright © 2012 Pearson Education, Inc.
Wrapper Classes• A wrapper class represents a particular primitive type as an
object. For example, Integer class represents a simple integer value.
• An Integer object may be created as
Integer obj = new Integer(40);
• All wrapper classes are in the java.lang package (no need to import).
Copyright © 2012 Pearson Education, Inc.
Wrapper Classes in the java.lang Package
Primitive type Wrapper class
byte Byte
short Short
int Integer
long Long
float Float
double Double
char Character
boolean Boolean
void Void
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Integer ClassUseful methods from the Integer class:•Integer (int value) : creates an Integer object storing the specified value•Integer (String str) : creates an Integer object storing the integer value extracted from the string, str•static int parseInt(String str) : returns the int corresponding to the value stored in the specified string, str•static String toBinaryString(int num) : returns a string representation of the specified integer value in base 2•static String toString(int num) : returns a string representation of the specified integer value in base 10•static Integer valueOf(String str) : returns a Integer object holding the int value represented by the argument string str.
Constants from the Integer class:Integer.MIN_VALUE returns the minimum int value, -231
Integer.MAX_VALUE returns the maximum int value, 231 -1
Copyright © 2012 Pearson Education, Inc.
Double ClassSome methods from the Double class:•Double (double value) : creates a Double object storing the specified value•Double (String str) : creates a Double object storing the double value in string, str•static double parseDouble(String str) : returns the double corresponding to the value stored in the specified string, str•static String toString(double num) : returns a string representation of the specified double value •static Double valueOf(String str) : returns a Double object holding the double value represented by the argument string str.
Constants from the Double class:Double.MIN_VALUE returns the minimum double value
Double.MAX_VALUE returns the maximum double value
Copyright © 2012 Pearson Education, Inc.
Example for split() and reading from a text file
• See WrapperSplitFile.java
Copyright © 2012 Pearson Education, Inc.
OutlineMethod OverLoading
printf method
Arrays
Declaring and Using Arrays
Arrays of Objects
Array as Parameters
Variable Length Parameter Lists
split() Method from String Class
Integer & Double Wrapper Classes
Two-Dimensional Arrays
Copyright © 2012 Pearson Education, Inc.
Two-Dimensional Arrays• A one-dimensional array stores a list of elements
• A two-dimensional array can be thought of as a table of elements, with rows and columns
onedimension
twodimensions
Copyright © 2012 Pearson Education, Inc.
Two-Dimensional Arrays• To be precise, in Java a two-dimensional array is an array of
arrays
• A two-dimensional array is declared by specifying the size of each dimension separately:
int[][] table = new int[12][50];
• A array element is referenced using two index values:
value = table[3][6]
• The array stored in one row can be specified using one index
Copyright © 2012 Pearson Education, Inc.
Two-Dimensional Arrays
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Expression Type Description
table int[][] 2D array of integers, orarray of integer arrays
table[5] int[] array of integers
table[5][12] int integer
Two-Dimensional Arraysint[][] matrix = new int[2][7]; //creates a 2-by-7 array
matrix[0][2] = 5;
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0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 5 0 0 0 0
0 0 0 0 0 0 0
Multidimensional Arrays• You can think of it as array of arrays
for (int i=0; i < 2; i++){
for (int j=0; j<7; j++){
matrix[i][j]=1;
}
}
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1 1 1 1 1 1 1
1 1 1 1 1 1 1
Copyright © 2012 Pearson Education, Inc.
//********************************************************************// TwoDArray.java Author: Lewis/Loftus//// Demonstrates the use of a two-dimensional array.//********************************************************************
public class TwoDArray{ //----------------------------------------------------------------- // Creates a 2D array of integers, fills it with increasing // integer values, then prints them out. //----------------------------------------------------------------- public static void main (String[] args) { int[][] table = new int[5][10];
// Load the table with values for (int row=0; row < table.length; row++) for (int col=0; col < table[row].length; col++) table[row][col] = row * 10 + col;
// Print the table for (int row=0; row < table.length; row++) { for (int col=0; col < table[row].length; col++) System.out.print (table[row][col] + "\t"); System.out.println(); } }}
Copyright © 2012 Pearson Education, Inc.
//********************************************************************// TwoDArray.java Author: Lewis/Loftus//// Demonstrates the use of a two-dimensional array.//********************************************************************
public class TwoDArray{ //----------------------------------------------------------------- // Creates a 2D array of integers, fills it with increasing // integer values, then prints them out. //----------------------------------------------------------------- public static void main (String[] args) { int[][] table = new int[5][10];
// Load the table with values for (int row=0; row < table.length; row++) for (int col=0; col < table[row].length; col++) table[row][col] = row * 10 + col;
// Print the table for (int row=0; row < table.length; row++) { for (int col=0; col < table[row].length; col++) System.out.print (table[row][col] + "\t"); System.out.println(); } }}
Output0 1 2 3 4 5 6 7 8 910 11 12 13 14 15 16 17 18 1920 21 22 23 24 25 26 27 28 2930 31 32 33 34 35 36 37 38 3940 41 42 43 44 45 46 47 48 49
Example & Exercise• See GradeExam.java
• Exercise: Modify the code such that there are two methods:– gradeAStudent : grades one student– gradeAllStudents: grades all students
Copyright © 2012 Pearson Education, Inc.
Copyright © 2012 Pearson Education, Inc.
//********************************************************************// SodaSurvey.java Author: Lewis/Loftus//// Demonstrates the use of a two-dimensional array.//********************************************************************
import java.text.DecimalFormat;
public class SodaSurvey{ //----------------------------------------------------------------- // Determines and prints the average of each row (soda) and each // column (respondent) of the survey scores. //----------------------------------------------------------------- public static void main (String[] args) { int[][] scores = { {3, 4, 5, 2, 1, 4, 3, 2, 4, 4}, {2, 4, 3, 4, 3, 3, 2, 1, 2, 2}, {3, 5, 4, 5, 5, 3, 2, 5, 5, 5}, {1, 1, 1, 3, 1, 2, 1, 3, 2, 4} };
final int SODAS = scores.length; final int PEOPLE = scores[0].length;
int[] sodaSum = new int[SODAS]; int[] personSum = new int[PEOPLE];
continue
Copyright © 2012 Pearson Education, Inc.
continue
for (int soda=0; soda < SODAS; soda++) for (int person=0; person < PEOPLE; person++) { sodaSum[soda] += scores[soda][person]; personSum[person] += scores[soda][person]; }
DecimalFormat fmt = new DecimalFormat ("0.#"); System.out.println ("Averages:\n");
for (int soda=0; soda < SODAS; soda++) System.out.println ("Soda #" + (soda+1) + ": " + fmt.format ((float)sodaSum[soda]/PEOPLE));
System.out.println (); for (int person=0; person < PEOPLE; person++) System.out.println ("Person #" + (person+1) + ": " + fmt.format ((float)personSum[person]/SODAS)); }}
Copyright © 2012 Pearson Education, Inc.
continue
for (int soda=0; soda < SODAS; soda++) for (int person=0; person < PEOPLE; person++) { sodaSum[soda] += scores[soda][person]; personSum[person] += scores[soda][person]; }
DecimalFormat fmt = new DecimalFormat ("0.#"); System.out.println ("Averages:\n");
for (int soda=0; soda < SODAS; soda++) System.out.println ("Soda #" + (soda+1) + ": " + fmt.format ((float)sodaSum[soda]/PEOPLE));
System.out.println (); for (int person=0; person < PEOPLE; person++) System.out.println ("Person #" + (person+1) + ": " + fmt.format ((float)personSum[person]/SODAS)); }}
OutputAverages:
Soda #1: 3.2Soda #2: 2.6Soda #3: 4.2Soda #4: 1.9
Person #1: 2.2Person #2: 3.5Person #3: 3.2Person #4: 3.5Person #5: 2.5Person #6: 3Person #7: 2Person #8: 2.8Person #9: 3.2Person #10: 3.8