Exercise
Statistics V2
Objetive
Write a java statistical program which will allow the user to:
- Add new data
- See all data entered
- Find an item, to see whether it has been entered or not
- View a summary of statistics: amount of data, sum, average, maximum, minimum
- Exit the program
These options must appear as a menu. Each option will be chosen by a number or a letter.
Create a statistical program which will allow the user to:
- Add new data
- See all data entered
- Find an item, to see whether it has been entered or not
- View a summary of statistics: amount of data, sum, average, maximum, minimum
- Exit the program
These options must appear as a menu. Each option will be chosen by a number or a letter.
The program must reserve space for a maximum of 1000 data, but keep count of how many data actually exist.
Example Code
import java.util.*;
public class Main
{
public static void main(String[] args)
{
float[] numbers = new float[1000];
int count = 0;
float max = 0.0f, min = 0.0f, total = 0.0f, searchNumber = 0.0f;
boolean found;
int option = 0;
do
{
System.out.println("1. Add");
System.out.println("2. Show");
System.out.println("3. Search");
System.out.println("4. Statistics");
System.out.println("5. Exit");
option = Integer.parseInt(new Scanner(System.in).nextLine());
if (option != 5)
{
switch (option)
{
case 1: // Add
System.out.println("Enter a number: ");
numbers[count] = Float.parseFloat(new Scanner(System.in).nextLine());
max = numbers[count];
min = numbers[count];
total += numbers[count];
count++;
if (max < numbers[count])
{
max = numbers[count];
}
if (min > numbers[count])
{
min = numbers[count];
}
break;
case 2: // Show
for (int i = 0; i < count; i++)
{
System.out.printf("%1$s " + "\r\n", numbers[i]);
}
break;
case 3: // Search
System.out.println("Enter a number for search: ");
searchNumber = Float.parseFloat(new Scanner(System.in).nextLine());
for (int i = 0; i < count; i++)
{
if (numbers[i] == searchNumber)
{
found = true;
}
}
if (found)
{
System.out.printf("Number %1$s found a amount of %2$s " + "\r\n", numbers[i]);
}
else
{
System.out.println("Not found");
found = false;
}
break;
case 4: // Statistics
System.out.printf("Total data: %1$s" + "\r\n", count + 1);
System.out.printf("Sum: %1$s" + "\r\n", total);
System.out.printf("Average: %1$s" + "\r\n", total / (count + 1));
System.out.printf("Min number: %1$s" + "\r\n", min);
System.out.printf("Max number: %1$s" + "\r\n", max);
break;
default:
System.out.println("Error, option 1-5");
break;
}
}
} while (option != 5);
}
}