Thread: Array Issues

find the middle number of that array length.

how to implement the guessed numbers into an array to find the middle number

Can you define what a "middle number" is? Perhaps give an example.

Your example is an array with an odd number of elements. What if there are an even number?
Is the middle element = (array.length+1)/2

Or are you talking the the value of the element?

Which is the middle element in an array with an even number of elements?

how to implement the guessed numbers into an array to find the middle number

from what inputs the user has inputed, find the middle number of that array length.

Not sure what those mean. The "middle" number(s) is a function of the size of the array. There is no need for guessed numbers to find it.

Still not clear what you are trying to do with an array. Given an array, by your definition, the middle can be found from the length of the array.
Where do the guessed numbers get involved?
Can you give an example of what you mean?
Say there is an array with 25 elements
and the user guesses: 44, 33, 5,77,55,22,4,7
What is supposed to happen?

The middle number would be found by some formula like: (the count of numbers entered+1/2) with a test if there are an even count and then there would be two middle numbers.
An example: with 6 numbers entered: (6+1)/2 = 3 and because there are an even number also 4.

Any help ... I've worked out how to process the middle and median but i cannot work out how to continur to input numbers into the array list, it will one process one number ... I also cant work out how to stop adding numbers to the array if a preset value is entered .e.g randomNumber = 45.

import java.util.Arrays;
import java.util.Scanner;

public class ArrayTest
{
Scanner input = new Scanner( System.in );

int usersGuess;
int randomNumber = 45;

public void enter()
{

System.out.printf("Please enter numbers: ");
usersGuess = input.nextInt();
}

public void testArray()
{


int testArray [] = new int[ 20 ];

for ( int i = 0; i < testArray.length; i++ )
testArray[ i ] = usersGuess ;

System.out.println( "Middle is: " + testArray[ (testArray.length+1)\2] );

System.out.println();

Arrays.sort( testArray );

System.out.println( "Median is: " + testArray[ testArray.length/2] );
System.out.println();

}


}


public class ArrayTestArgs
{
public static void main( String [] args )
{
ArrayTest arrayTest = new ArrayTest();

arrayTest.enter();
arrayTest.testArray();

}

}

how to stop adding numbers to the array if a preset value is entered

Use an if statement to test the value entered against the preset value and if equal, use the break statement to exit the loop.

The order of the statements in the program do not make any sense. Before you write any more code you need to get organized. Make a list of what the code needs to do and the order it needs to do it. Write the list in pseudo code and post it. When the steps make sense then write the code.

Please Edit your post and wrap your code with[code=java]<YOUR CODE HERE>[/code] to get highlighting

Please read my last post, we crossed.

Here's a sample of pseudo code for some program:
begin loop
ask user for input
read input
test that input is valid
if not valid go to top of loop and ask again
process input
add input to list
if list is full exit loop
end loop

The list of the above steps describes what that program is supposed to do.

Please Edit your post and wrap your code with[code=java]<YOUR CODE HERE>[/code] to get highlighting