Array Looping

**LeeDD** · March 18th, 2013, 02:33 PM

I Cant Seem To Figure Out Where To Put My Loop For Row Totals.. It Ends Up With Number Repetitions n errors.. the code in italics is supposed to represent row totals but i tried placing it every where but i keep getting a constant inappropriate result..

  public static void main(String[] args)
    {
 
        int [] [] totals  = { {500, 150, 575, 500}, 
                            {200, 700, 175, 200}, 
                            {300, 75, 100, 400}, 
                            {100, 185, 118, 250}, 
                            {600, 260, 663, 345} };
 
 
 
      // header
        System.out.printf("\t\t%20s\n\n", "Overall Sales Distribution:");
 
        System.out.print("            ");
 
        // column headers for table
        for (int sp = 0; sp < totals[0].length; sp++)
        {
 
            System.out.printf("SalesP%d  ", sp + 1);
        }
 
        System.out.print("Total"); // total sales columns
 
        // row headers for table
        for(int prod = 0; prod < totals.length; prod++)
         {  
 
             // print row totals in column total
           [I] for(int row  = 0; row < totals.length; row++)
            {
                int sum = 0;
 
                for(int column = 0; column < totals[row].length; column++)
                {
                sum += totals [row][column];
 
                System.out.printf("%8d", sum);
                }[/I]
 
            }
            System.out.printf("\nProd%d", prod + 1);
 
            // print array values in table
                for(int sp : totals[prod])
                {
 
                    System.out.printf("%10d", sp);          
                }
         }
 
            System.out.print("\nTotal");
 
          for(int r = 0; r < totals.length; r++)
            {
                int total = 0;
                for(int c = 0; c < totals[r].length; c++)
                    total += totals[c][r];
 
                    System.out.printf("%10d", total);
            }
 
}
 
 
}

--- Update ---

This Is The result i get

Overall Sales Distribution:
 
            SalesP1  SalesP2  SalesP3  SalesP4  Total     500     650    1225    1725     200     900    1075    1275     300     375     475     875     100     285     403    
Prod1       500       150       575       500     500     650    1225    1725     200     900    1075    1275     300     375     475     875     100     285     403     653  
Prod2       200       700       175       200     500     650    1225    1725     200     900    1075    1275     300     375     475     875     100     285     403     653    
Prod3       300        75       100       400     500     650    1225    1725     200     900    1075    1275     300     375     475     875     100     285     403     653     
Prod4       100       185       118       250     500     650    1225    1725     200     900    1075    1275     300     375     475     875     100    
Prod5       600       260       663       345
Total      1100      1110       968      1350

**Norm** · March 18th, 2013, 02:49 PM

Can you post what you want the output to look like? And add some comments saying what is wrong with the program's current output.

**LeeDD** · March 18th, 2013, 03:15 PM

Salesp1 salesp2 salesp3 salesp4 Total

prod1 500 150 575 500 1725
prod2 200 700 175 200 1225
prod3 300 75 100 400 875
prod4 100 185 118 250 653
prod5 600 260 663 345 1868

total 1100 1110 968 1350

the column total works ok.. but i cant seem to get the row total to work.. i tried placing the code in different places but i just wont work

--- Update ---

Salesp1 salesp2 salesp3 salesp4 Total

prod1 500 150 575 500 1725
prod2 200 700 175 200 1225
prod3 300 75 100 400 875
prod4 100 185 118 250 653
prod5 600 260 663 345 1868

total 1100 1110 968 1350

the column total works ok.. but i cant seem to get the row total to work.. i tried placing the code in different places but i just wont work

**Norm** · March 18th, 2013, 03:20 PM

I think it'd be easier to completely rewrite the code rather than try to fix what is there.

Pseudo code:
print the header
begin loop through rows
print the row header in first column
begin loop through columns
print the column data w/o endline
end loop thru columns
print endline
end loop thru rows
print total line

**LeeDD** · March 18th, 2013, 04:01 PM

ok then thanks.. i'll tell you whats up with it after im done

--- Update ---

Can i ask what exactly do u mean by end line.. i dont wanna be unsure

**Norm** · March 18th, 2013, 04:09 PM

The endline character: "\n"or what is printed by the println() method.

What I'm talking about is the line.separator value. Its value depends on what OS you are on. On Windows its: "\r\n" or others it can be "\r" and others "\n".

Many programs on Windows will recognize "\n" as the end of a line. But not all do.

**LeeDD** · March 18th, 2013, 06:20 PM

oh aight.. i kno it as new line

--- Update ---

i loop thru the row with this

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

and apparently it keeps printing column header more than once. which then gives me more than 1 table.

public static void main(String[] args)
    {
        int [] [] totals  = { {50, 15, 75, 50}, 
                            {20, 70, 15, 20}, 
                            {30, 75, 10, 40}, 
                            {10, 85, 81, 50}, 
                            {60, 60, 66, 45} };
 
 
 
      // header
        System.out.printf("\t\t%20s\n\n", "Overall Sales Distribution:");
 
 
             // looping thru rows
            for(int row  = 0; row < totals.length; row++)
            {
                        System.out.print("             ");
 
                        // loop n print column headers
                 for (int sp = 0; sp < totals[0].length; sp++)
                    { 
                        System.out.printf("SalesPerson%d  ", sp + 1);
                    }
 
                         // print row total last in row column
                        System.out.print("Total"); // total sales columns
 
                int sum = 0; // initiate sum
 
                // looping thru columns 
                for(int column = 0; column < totals[row].length; column++)
                {
                     for(int prod = 0; prod < totals.length; prod++)
                     {  
                        System.out.printf("\nProd%d", prod + 1);
 
 
                            // print array values in table
                            for(int sp : totals[prod])
                                {
 
                                    System.out.printf("%10d", sp);          
                                }
                    }
                            sum += totals [row][column];
 
                            System.out.printf("%8d", sum);
                } 
                System.out.println("");
 
            }
 
    }

--- Update ---

hers what the results look like:

		Overall Sales Distribution:
 
             SalesPerson1  SalesPerson2  SalesPerson3  SalesPerson4  Total
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45      50
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45      65
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45     140
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45     190
             SalesPerson1  SalesPerson2  SalesPerson3  SalesPerson4  Total
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45      20
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45      90
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45     105
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45     125
             SalesPerson1  SalesPerson2  SalesPerson3  SalesPerson4  Total
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45      30
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45     105
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45     115
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45     155
             SalesPerson1  SalesPerson2  SalesPerson3  SalesPerson4  Total
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45      10
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45      95
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45     176
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45     226
             SalesPerson1  SalesPerson2  SalesPerson3  SalesPerson4  Total
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45      60
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45     120
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45     186
Prod1        50        15        75        50
Prod2        20        70        15        20
Prod3        30        75        10        40
Prod4        10        85        81        50
Prod5        60        60        66        45     231

**Norm** · March 18th, 2013, 06:42 PM

Why are the the loops nested 3 deep?
Here's what should work:
One loop for each row
one loop for the columns on each row

What are the other loops for?

**LeeDD** · March 18th, 2013, 06:48 PM

Sum of them are for the headers.

**Norm** · March 18th, 2013, 06:56 PM

Try reducing the nesting depth to 2.

Write some pseudo code for how the code works

**StephenCoyle** · March 18th, 2013, 07:52 PM

It might help to indent your code properly. You can read it better. But anyway this is what I have been able to do :

  **** Please don't spoonfeed code

**Norm** · March 18th, 2013, 08:01 PM

@StephenCoyle
Please read this: http://www.javaprogrammingforums.com...n-feeding.html

**LeeDD** · March 18th, 2013, 09:04 PM

ooooooh

**StephenCoyle** · March 19th, 2013, 02:08 PM

Originally Posted by Norm

@StephenCoyle
Please read this: http://www.javaprogrammingforums.com...n-feeding.html

Read and understood. Sorry.

--- Update ---

Originally Posted by LeeDD

ooooooh

I should have known better.

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