Hey,

What's up y'all,


I am trying to write some code in Java that will read in the numbers
from a file (one # on each line of .txt file) put them into an array,
and then run quick sort on the array. Eclipse is showing some red that
I am having trouble with. My errors are marked with comments, and what
the error is, if anyone can help me get this to run, thanks everyone!


-Kyle

 [code]import java.io.*;
 import java.util.Scanner;
 import java.io.BufferedReader;
 import java.io.File;
 
 
 public class Lab3 {
 
 public static void main(String[] args) throws IOException{
 
 
 System.out.print("Name of file with array: ");
 Scanner readIn = new Scanner(System.in);
 String input=readIn.nextLine();}
 **testScan1(input);**  /*Eclipse says "return type for method is missing" trying to call method testScan below*/
 
 
 **public testScan1(String filename)**  //"Return type is missing for method"
 
 {
 File file = new File(filename);
 Scanner scan;
 try{
  int [] array = new int[5];
 
 scan = new Scanner( file );
 }
 catch ( java.io.FileNotFoundException e )
 {
 System.out.println( "couldn't open. file not found "  );
 return;
 }
 while(file.hasNext())      //"underlies "hasNext" "Method hasNext() is undefined"
 {
 for( int i = 0; i <= file.length(); ++i)
 {
 
 **array**[i]=scan.next();    //"Array cannot be Resolved"
 
 
 }
 }
 
 int partition(int arr[], int left, int right)
 {
  int i=left; int j = right;
  int tmp;
  int pivot = arr[(left+right)/2];
  while (i<=j){
   while(arr[i]<pivot)
    i++;
   while (arr[j]>pivot)
    j--;
   if (i<=j){
    tmp=arr[i];
    arr[i]=arr[j];
    arr[j]=tmp;
    i++; j--;
   }
  }
  return i;
     }
     void quickSort(int arr[], int left, int right){
  int index = partition(arr, left, right);
  if (left<index-1);
  quickSort(arr, left, index-1);
  if (index<right)
   quickSort(arr, index, right);
     }
     }
 [/code][/pre]
 
 Software/Hardware used:
 Eclipse, java