himynameischad

I am having trouble getting my code to work.correctly. here is the problem: You are to write a program that reads data from a file, calculates statistics on that data, and then outputs the statistics to either another file or to the screen, depending on what the user wants.

I can not get my program to get the the numbers from the file and pass to the different methods. Please help.

here is my code

import java.util.*;

import java.io.*;

public class statisticsTest {

public static void main(String[] args)

throws FileNotFoundException {

double [] array;

double median;

double max;

double min;

double mean;

double mode;

double sd;

int line;

int count = 0;

Scanner console = new Scanner(System.in);

System.out.print("File name: ");

String name = console.nextLine();

Scanner input = new Scanner(new File(name));

int arraysize=input.nextInt();

array = new double [arraysize];

while(count < arraysize){

count++;

}

System.out.println("There are " + count + " numbers in your input file.");

max=max(array);

System.out.println("Max: "+ max);

min=min(array);

System.out.println("Min: "+ min);

mean=mean(array);

System.out.println("Mean: "+ mean);

median=median(array);

System.out.println("Median: "+ median);

System.out.println("Mode: ");

System.out.println("Standard Deviation: " + sd( array ) );

}

public static double median(double[] array){

int size = array.length;

double temp;

for (int i=0; i<size; i++){

for (int j=0; j<size-i-1; j++){

if(array[j]>array[j+1]){

temp = array[j];

array[j] = array[j+1];

array[j+1]=temp;

}

}

}

double med;

if ((size % 2) == 0){

med = (array[size / 2] + array[size / 2 - 1]) / 2.000;

} else {

med = array[size / 2];

}

return med;

}

public static double max(double[] array){

double max = array[0];

for (int j = 1; j < array.length; j++){

if (array[j] > max) {

max = array[j];

}

}

return max;

}

public static double min(double[] array){

double min = array[0];

for (int j = 1; j < array.length; j++){

if (array[j] < min){

min = array[j];

}

}

return min;

}

public static double mean(double[] array){

double mean = 0;

for (int i=0; i<array.length; i++){

mean = mean + array[i];

}

return mean / array.length;

}

public static double sd ( double[] array ){

double mean = 0;

double n = array.length;

if ( n < 2 ){

return Double.NaN;

}

for ( int i=0; i<n; i++ ){

mean += array[i];

}

mean /= n;

double sum = 0;

for ( int i=0; i<n; i++ ){

final double v = array[i] - mean;

sum += v * v;

}

return Math.sqrt( sum / ( n - 1 ) );

}

public static int mode(int [] array) {

int[] tally = new int[array.length];

for(int i = 0; i < tally.length; i++) {

tally[i] = 0;

}

for(int i = 0; i < array.length; i++) {

int value = array[i];

tally[value]++;

}

int maxIndex = 0;

for(int i = 1; i < tally.length; i++) {

if(tally[i] > tally[maxIndex]) {

maxIndex = i;

}

}

return maxIndex;

}

}

There are several things I can not get my code to do. First I need it to read an external file which contains numbers and put it into an array. Next I need it to count how many numbers are in the file. Next, I cant get my main method to call the mode. I'm sure there may be other mistakes in my code, so any help will be greatly appreciated.

import java.util.*;

import java.io.*;

public class statisticsTest {

public static void main(String[] args)

throws FileNotFoundException {

double [] array;

double median;

double max;

double min;

double mean;

double mode;

double sd;

Scanner console = new Scanner(System.in);

System.out.print("File name: ");

String name = console.nextLine();

Scanner input = new Scanner(new File(name));

int arraysize=input.nextInt();

array = new double [arraysize];

System.out.println("There are " + arraysize + " numbers in your input file.");

max=max(array);

System.out.println("Max: "+ max);

min=min(array);

System.out.println("Min: "+ min);

mean=mean(array);

System.out.println("Mean: "+ mean);

median=median(array);

System.out.println("Median: "+ median);

System.out.println("Mode: ");

System.out.println("Standard Deviation: " + sd( array ) );

}

public static double median(double[] array){

int size = array.length;

double temp;

for (int i=0; i<size; i++){

for (int j=0; j<size-i-1; j++){

if(array[j]>array[j+1]){

temp = array[j];

array[j] = array[j+1];

array[j+1]=temp;

}

}

}

double med;

if ((size % 2) == 0){

med = (array[size / 2] + array[size / 2 - 1]) / 2.000;

} else {

med = array[size / 2];

}

return med;

}

public static double max(double[] array){

double max = array[0];

for (int j = 1; j < array.length; j++){

if (array[j] > max) {

max = array[j];

}

}

return max;

}

public static double min(double[] array){

double min = array[0];

for (int j = 1; j < array.length; j++){

if (array[j] < min){

min = array[j];

}

}

return min;

}

public static double mean(double[] array){

double mean = array[0];

for (int i=0; i<array.length; i++){

mean = mean + array[i];

}

return mean / array.length - 1;

}

public static double sd ( double[] array ){

double mean = 0;

double n = array.length;

if ( n < 2 ){

return Double.NaN;

}

for ( int i=0; i<n; i++ ){

mean += array[i];

}

mean /= n;

double sum = 0;

for ( int i=0; i<n; i++ ){

final double v = array[i] - mean;

sum += v * v;

}

return Math.sqrt( sum / ( n - 1 ) );

}

public static int mode(int [] array) {

int[] tally = new int[array.length];

for(int i = 0; i < tally.length; i++) {

tally[i] = 0;

}

for(int i = 0; i < array.length; i++) {

int value = array[i];

tally[value]++;

}

int maxIndex = 0;

for(int i = 1; i < tally.length; i++) {

if(tally[i] > tally[maxIndex]) {

maxIndex = i;

}

}

return maxIndex;

}

}

My wii is modded with the wiikey chip, and I do have the nes snes emulators. I just want to be able to put my roms on a dvd because a 2 GB SD card is not large enough for all my roms.

I know he is a mix, but im trying to figure out a mix of what. He weighs a little over 60 pounds.

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