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Thread: my code will not return everything...

  1. #1
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    Unhappy my code will not return everything...

    hi, i have been looking at this code way to long! i have been playing with the return statement and i don't know what the problem is. i just want it to print the entire 9 by 9 text file that it reads. take a look at it thanks in advance! i will also attach an example of the type of copy of data or txt file it reads...
    import java.util.*;
    import java.io.*;
    import javax.swing.JOptionPane;
     
    public class SudokuSolverXXX{
    public static void main (String [] args){
      String input = JOptionPane.showInputDialog("Enter the file path: ");
    	String file_Name = new String(input); //String("input");
    	int [][] s = new int[9][9];
    	try{
    		File q = new File(file_Name);
    		Scanner fin = new Scanner(q);
    		 for(int r = 0; r < s.length; ++r){
    		   for(int c = 0; c < s[r].length; ++c){
    		     s[r][c] = fin.nextInt();
    			 }
    	System.out.println(r);
    		}
    	}
     
    	//System.out.println (s);
    	catch (IOException e) {
    		System.out.println( "The file path or name: "+input+", was not found! " );
    	}
    }
    }
    Attached Files Attached Files


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: my code will not return everything...

    want it to print the entire 9 by 9 text file that it reads.
    Please copy the full output from the program and paste it here. Add some comments to the post describing what is wrong with the output and show what you want the output to look like.

    Please edit your post and wrap your code with code tags:
    [code=java]
    <YOUR CODE HERE>
    [/code]
    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: my code will not return everything...

    System.out.println(s);

    You can't print the 2d array with such a simple statement. You need a loop.

    How come you are using ++c (preincrement)) and not c++ ?

    BTW, the puzzle cannot be solved. It isn't valid!

  4. #4
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    Default Re: my code will not return everything...

    This code reads the attached file "sudoku.txt". Then it is supposed to print everything in the txt file to the console. as of now it prints this:
    0
    1
    2
    3
    4
    5
    6
    7
    8


    it should print:
    9 8 3 1 0 0 9 0 6
    6 0 0 9 0 6 8 0 0
    6 7 0 0 0 8 5 1 2
    6 4 7 0 0 0 3 0 0
    5 0 0 0 5 0 0 0 1
    4 0 8 0 0 0 7 4 0
    3 1 2 5 0 0 8 9 0
    2 0 5 4 0 7 1 0 0
    8 0 6 0 0 1 0 5 9


    --- Update ---

    i know the puzzle cant be solved this is just a project it will in time tell me that it is not valid, but as of now im just trying to get it to return the entire puzzle as it is in the txt file.

  5. #5
    Super Moderator curmudgeon's Avatar
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    Default Re: my code will not return everything...

    Where is the code that prints each cell's value? I don't see it posted anywhere.

  6. #6
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    Default Re: my code will not return everything...

    the goal is to print each cell's value that is what i need help with.

  7. #7
    Super Moderator Norm's Avatar
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    Default Re: my code will not return everything...

    To print several rows of data with each row having several columns, use nested loops.
    The outer loop goes over the rows.
    The inner loop goes over the columns
    print each column's value on the current line
    at the end of the columns, use println() to move the output to the next line
    If you don't understand my answer, don't ignore it, ask a question.

  8. The Following User Says Thank You to Norm For This Useful Post:

    zach_l_b (March 30th, 2013)

  9. #8
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    Default Re: my code will not return everything...

    ok, i fixed it my self here is the code i wanted:

    import java.util.*;
    import java.io.*;
    import javax.swing.JOptionPane;
     
    public class SudokuSolverXXX{
    public static void main (String [] args){
      String input = JOptionPane.showInputDialog("Enter the file path: ");
    	String file_Name = new String(input); //String("input");
    	int [][] s = new int[9][9];
    	try{
    		File q = new File(file_Name);
    		Scanner fin = new Scanner(q);
    		 for(int r = 0; r < s.length; ++r){
    		   for(int c = 0; c < s[r].length; ++c){
    		     s[r][c] = fin.nextInt();
    			 }
    			 //System.out.print(s[r][c]);
    			 //System.out.print(" "+s[8][1]);
    		}
    		for(int u = 0; u < s.length; u++) {
     
    				for(int a = 0; a < s[u].length; a++) {
     
    					System.out.print(s[u][a] + " ");
     
    				}
    				System.out.println();
    			}
    		}
    	catch (IOException e) {
    		System.out.println( "Dude, the file path or name: "+input+", was not found! " );
    	}
    }
    }

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