todd stolz-schroeder

David Newton wrote:Oh, that's obnoxious--just cut-and-paste next time, please.

Are you calling the functions? They won't call themselves.

You cant copy out of the command promt so thats what i had to do.

And i added the return command and still the same thing

import java.util.Scanner; import java.util.Arrays; public class array { public static void main(String [] args) { Scanner console = new Scanner(System.in); boolean good = false; int arraysize; int value; String arraySizeString = null; String Stgarray = null; while(!good) { good = true; System.out.print("Enter size of array: "); arraySizeString = console.nextLine(); for(int x=0; x<arraySizeString.length(); ++x) if(!Character.isDigit(arraySizeString.charAt(x))) good=false; if(!good) System.out.println("Invalid array size - please enter an integer value"); } arraysize = Integer.parseInt(arraySizeString); int[] array = new int[arraysize]; good = false; for(int i = 0 ; i < array.length; ++i) { while(!good) { good = true; System.out.print("Enter Value #" + (i+1) + ":"); arraySizeString = console.nextLine(); for(int x=0; x<arraySizeString.length(); ++x) if(!Character.isDigit(arraySizeString.charAt(x))) good=false; if(!good) System.out.println("Invalid array size - please enter an integer value"); } array[i] = Integer.parseInt(arraySizeString); good = false; } System.out.println("\n" + "Your data is:"); for(int x = 0; x < array.length; ++x) { System.out.println(array[x]); } Arrays.sort(array); } public static double printAverage (int [] array) { double average = 0; for(int x = 0; x < array.length; ++x) { average=average + array[x]; } System.out.println("\n"+"Average is: " + average/array.length); return average; } public static int printSmallest (int [] array) { int smallest; smallest = array[0]; System.out.println("Smallest value is: " + smallest); return smallest; } public static double printLargest (int [] array) { int largest = array[0]; for(int x = 1; x < array.length; x++) { if(largest < array[x]) { largest = array[x]; } System.out.println("Largest value is: " + largest); } return largest; } public static int[] printSorted (int [] array) { System.out.println("\n" + "Your sorted data is:"); for(int x = 0; x < array.length; ++x) { System.out.println(array[x]); } return array; } public static double printMedian (int [] array) { double even = 0; int result = array.length % 2; double median = 0; if (result == even) { int rightNumber = array.length / 2; int leftNumber = rightNumber - 1; median = (array[rightNumber] + array[leftNumber]) / 2; System.out.println("\n" + "The median is: " + median); } else { median = array[array.length / 2]; } return median; } }

it looks like this





instead of this

Im trying to do it but when its like this why does it return nothing??

import java.util.Scanner; import java.util.Arrays; public class array { public static void main(String [] args) { Scanner console = new Scanner(System.in); boolean good = false; int arraysize; int value; String arraySizeString = null; String Stgarray = null; while(!good) { good = true; System.out.print("Enter size of array: "); arraySizeString = console.nextLine(); for(int x=0; x<arraySizeString.length(); ++x) if(!Character.isDigit(arraySizeString.charAt(x))) good=false; if(!good) System.out.println("Invalid array size - please enter an integer value"); } arraysize = Integer.parseInt(arraySizeString); int[] array = new int[arraysize]; good = false; for(int i = 0 ; i < array.length; ++i) { while(!good) { good = true; System.out.print("Enter Value #" + (i+1) + ":"); arraySizeString = console.nextLine(); for(int x=0; x<arraySizeString.length(); ++x) if(!Character.isDigit(arraySizeString.charAt(x))) good=false; if(!good) System.out.println("Invalid array size - please enter an integer value"); } array[i] = Integer.parseInt(arraySizeString); good = false; } System.out.println("\n" + "Your data is:"); for(int x = 0; x < array.length; ++x) { System.out.println(array[x]); } Arrays.sort(array); } public static void printAverage (int [] array) { double average = 0; for(int x = 0; x < array.length; ++x) { average=average + array[x]; } System.out.println("\n"+"Average is: " + average/array.length); printAverage (array); } public static void printSmallest (int [] array) { int smallest; smallest = array[0]; System.out.println("Smallest value is: " + smallest); printSmallest (array); } public static void printLargest (int [] array) { int largest = array[0]; for(int x = 1; x < array.length; x++) { if(largest < array[x]) { largest = array[x]; } System.out.println("Largest value is: " + largest); } printLargest (array); } public static void printSorted (int [] array) { System.out.println("\n" + "Your sorted data is:"); for(int x = 0; x < array.length; ++x) { System.out.println(array[x]); } printSorted (array); } public static void printMedian (int [] array) { double even = 0; int result = array.length % 2; double median = 0; if (result == even) { int rightNumber = array.length / 2; int leftNumber = rightNumber - 1; median = (array[rightNumber] + array[leftNumber]) / 2; } else { median = array[array.length / 2]; } printMedian (array); System.out.println("\n" + "The median is: " + median); } }

Anupam Jain wrote:

todd stolz-schroeder wrote:
I have my whole program written but i need to break it down into 5 seperate methods one for the values, one for the average, one for the smallest, one for the largest and one for the median. im a little confused on how to do it, thanks.

You have the answer in your question itself...

try to make the array reference variable as a class member. make five methods as:

getValues() //To store values in array
getAverage() //to find the average value
getSmallest() //to find the smallest value
getLargest() //to find the largest value
getMedian() //to find the Median value

Hope it helps....

Yeah get that but i dont know what the write code for it would be and where to put it I worked on this all day yesterday and just wannna get it done

I have my whole program written but i need to break it down into 5 seperate methods one for the values, one for the average, one for the smallest, one for the largest and one for the median. im a little confused on how to do it, thanks.


import java.util.Scanner; import java.util.Arrays; public class array { public static void main(String [] args) { Scanner console = new Scanner(System.in); boolean good = false; int arraysize; int value; double average = 0; int smallest; double even = 0; String arraySizeString = null; String Stgarray = null; while(!good) { good = true; System.out.print("Enter size of array: "); arraySizeString = console.nextLine(); for(int x=0; x<arraySizeString.length(); ++x) if(!Character.isDigit(arraySizeString.charAt(x))) good=false; if(!good) System.out.println("Invalid array size - please enter an integer value"); } arraysize = Integer.parseInt(arraySizeString); int[] array = new int[arraysize]; good = false; for(int i = 0 ; i < array.length; ++i) { while(!good) { good = true; System.out.print("Enter Value #" + (i+1) + ":"); arraySizeString = console.nextLine(); for(int x=0; x<arraySizeString.length(); ++x) if(!Character.isDigit(arraySizeString.charAt(x))) good=false; if(!good) System.out.println("Invalid array size - please enter an integer value"); } array[i] = Integer.parseInt(arraySizeString); good = false; } System.out.println("\n" + "Your data is:"); for(int x = 0; x < array.length; ++x) { System.out.println(array[x]); } Arrays.sort(array); for(int x = 0; x < array.length; ++x) { average=average + array[x]; } System.out.println("\n"+"Average is: " + average/arraysize); smallest = array[0]; int largest = array[0]; for(int x = 1; x < array.length; x++) { if(largest < array[x]) { largest = array[x]; } } System.out.println("Smallest value is: " + smallest); System.out.println("Largest value is: " + largest); System.out.println("\n" + "Your sorted data is:"); for(int x = 0; x < array.length; ++x) { System.out.println(array[x]); } int result = array.length % 2; double median = 0; if (result == even) { int rightNumber = array.length / 2; int leftNumber = rightNumber - 1; median = (array[rightNumber] + array[leftNumber]) / 2; } else { median = array[array.length / 2]; } System.out.println("\n" + "The median is: " + median); } }

I figured out most of it, i just need help with a boolean to tell if the budget is over 3.94 for true and if its under its false.

Can someone send me in the right direction on how to write a boolean variable?

this is the code i have so far


import javax.swing.JOptionPane; public class Lunch { public static void main(String[] args) { String lunch; lunch=JOptionPane.showInputDialog (null,"Enter your budget", "Budget", JOptionPane.QUESTION_MESSAGE); double apple = .25; double cheese = 3.99; double bread = 1.19; double total; JOptionPane.showMessageDialog(null, "Lunch consists of:\n3 apples at $0.25 a piece\n0.5lb of cheese at $3.99/lb\n1 loaf(s) of bread at $1.19"); JOptionPane.showMessageDialog(null, "The total is " + (total = (3 * apple) + (.5 * cheese) + bread)); } }

i really need help with my homework


this is what i have to do

You are buying a picnic lunch to share with friends in the park. Write, compile, and test a Java class that will 1) ask for a budget amount 2) display the cost of each item for a lunch for three and 3) calculate and display the total price of all the items and determine and display whether you have exceeded your budget.

Lunch items will consist of apples, cheese, and bread. Use six class variables of the appropriate data type to hold the price (cost) and amount (quantity) of each item as indicated in the following table:

ITEM
COST
QUANTITY

Apple
$0.25/each
3

Cheese
$3.99/lb
0.5 lb

Bread
$1.19/loaf
1



You will need additional class variables to hold the budget and total amounts.

Your program will ask the user for the budget amount through an input dialog box and then display the results in message dialog boxes. Hint: it might be easier to first create a String variable to hold all or part of the second parameter to the JOptionPane.showMessageDialog() method.


Your output should resemble the pictures below:









this is what i have so far, i need a little help with it. thanks!


import javax.swing.JOptionPane; public class Lunch { public static void main(String[] args) { String lunch; lunch=JOptionPane.showInputDialog (null,"Enter your budget", "Budget", JOptionPane.QUESTION_MESSAGE); double apple = .25; double cheese = 3.99; double bread = 1.19; JOptionPane.showMessageDialog( null, "Lunch consists of:3 apples at $0.25 a piece 0.5lb of cheese at $3.99 a pound;1 loaf(s) of bread at $1.19"); total = apple + cheese + bread; JOptionPane.showMessageDialog(null, "The total is: " + total,JOptionPane.PLAIN_MESSAGE); } }