Programming Forums > Application Development > Java

357mag · Jul 5th, 2007, 6:50 PM

I've got this program(I wrote it in C++ now transferring it to Java) that has three columns. Under the first column is a number(1, 2, 3, 4, 5) and under the second column is the square, and under the third column is the cube. But for some reason, the numbers under the Cube column don't look right. This is what the output looks like:

(Toggle Plain Text)

Value     Square     Cube
  1          1          1
  2          4          8
  3          9          27
  4         16           64
  5         25           125

I want the numbers under the Cube column to print more like they are under the Square column, so they will look more like:

(Toggle Plain Text)

Beats me why it's doing that. Here is my program:

(Toggle Plain Text)

public static void main(String args[]) {
        
        System.out.println("Value     Square     Cube");
        
        for (int n = 1; n <= 5; n++)
        {
            System.out.print("  ");
            System.out.print(n);
            System.out.print("         ");
            System.out.print(square(n));
            System.out.print("          ");
            System.out.print(cube(n));
            System.out.println();
        }
               
    }
    
    static int square(int x)
    {
        return x * x;
    }
    
    static int cube(int y)
    {
        return y * y * y;
    } 
}

Ben.Dougall · Jul 5th, 2007, 6:55 PM

because of the space seperators... i would use a \t instead of " ". Once the squares hit 2 digits, it makes another space in the line of output.

Heres what could pose a better solution

(Toggle Plain Text)

public static void main(String args[]) 
{
        
    System.out.println("Value\tSquare\tCube");
       
    for (int n = 1; n <= 5; n++)
    {
        System.out.println( " " + n + "\t" + square(n) + "\t" + cube(n) );
    }
               
}
    
    static int square(int x)
    {
        return x * x;
    }
    
    static int cube(int y)
    {
        return y * y * y;
    } 
}

357mag · Jul 5th, 2007, 7:08 PM

I'll try your suggestion and hopefully it will work. But it doesn't explain why when we get to the Cube column, specifically when the number is 64 and then 125 that the output shifts over to the right even more. There are some numbers under the Square column that also have two digits in them, yet they print just fine.

Ben.Dougall · Jul 5th, 2007, 7:13 PM

Heres a quick C++ version of your code as i don;t have a Java SDK installed. The \t character can be used in either language.

(Toggle Plain Text)

#include <iostream>

int Square ( int &num  ) 
{
	return num * num;
}

int Cube ( int &num )
{
	return num * num * num;
}

int main ( void ) 
{
	std::cout << "Num\tSquare\tCube" << std::endl;

	for ( int i = 0; i < 6; ++i ) 
		std::cout << i << "\t" << Square( i ) << "\t" << Cube( i ) << std::endl;
	
	std::cout << std::endl;
	return 0;
}

Which when run produces:

(Toggle Plain Text)

Num     Square  Cube
0       0       0
1       1       1
2       4       8
3       9       27
4       16      64
5       25      125

Press any key to continue . . .

::::::::::::::

Quote:

I'll try your suggestion and hopefully it will work. But it doesn't explain why when we get to the Cube column, specifically when the number is 64 and then 125 that the output shifts over to the right even more. There are some numbers under the Square column that also have two digits in them, yet they print just fine.

AS for that, I have no clue, because indeed the square column should be bumped over as well.

357mag · Jul 5th, 2007, 7:20 PM

Well here is what I did. I wanted the numbers to print under the centers of the words Value, Square, and Cube, instead of at the left:

(Toggle Plain Text)

System.out.println( "  " + n + "\t" + "  " + square(n) + "\t" + " " + cube(n) );

But when I look at the headings Value, Square, and Cube, the word Cube is spaced closer to the word Square, than Square is to Value. I don't know why that is. I want it to look evenly spaced between the words:

(Toggle Plain Text)

Value     Square     Cube

But instead it's looking more like this:

(Toggle Plain Text)

Value     Square   Cube

I got to try and fix it so it looks evenly spaced.

Ben.Dougall · Jul 5th, 2007, 7:45 PM

A quick fix would be add one or two spaces after the second \t... You could use if's and do checks to make it better, but for a minor program, I would use the quick fix.

357mag · Jul 5th, 2007, 9:34 PM

Yeah I guess that would work. Does anyone know why the words are not evenly spaced just by using the "\t" character? Why does the word Cube appear closer to the word Square, than Square does to Value? Seems to me all three words should be evenly spaced.

DaWei · Jul 5th, 2007, 9:38 PM

Use formatted output, space it as you like.

(Toggle Plain Text)

    public static void main (String[] args)
    {
        System.out.println("Value    Square     Cube");
        
        for (int n = 1; n <= 5; n++)
        {
            System.out.format ("%3d%10d%10d\n", n, n*n, n*n*n);
        }
               
    }

Output:
Value    Square     Cube
  1         1         1
  2         4         8
  3         9        27
  4        16        64
  5        25       125

357mag · Jul 5th, 2007, 11:03 PM

What if I really like the idea of calling the methods to do the work? Is there a way to combine calling the Square and the Cube method, and still using the format function?

357mag · Jul 5th, 2007, 11:23 PM

I got it figured out. I did this:

(Toggle Plain Text)

System.out.format("%3d", n);
	            System.out.format ("%10d", square(n));
	            System.out.format("%10d", cube(n));
	            System.out.println()

My way is more work, but I really wanted to use the methods.

Jul 5th, 2007, 6:50 PM	#1
357mag Hobbyist Programmer Join Date: Mar 2005 Posts: 148 Rep Power: 4	My output does not look right I've got this program(I wrote it in C++ now transferring it to Java) that has three columns. Under the first column is a number(1, 2, 3, 4, 5) and under the second column is the square, and under the third column is the cube. But for some reason, the numbers under the Cube column don't look right. This is what the output looks like: (Toggle Plain Text) Value Square Cube 1 1 1 2 4 8 3 9 27 4 16 64 5 25 125 Value Square Cube 1 1 1 2 4 8 3 9 27 4 16 64 5 25 125 I want the numbers under the Cube column to print more like they are under the Square column, so they will look more like: (Toggle Plain Text) Cube 1 8 27 64 128 Cube 1 8 27 64 128 Beats me why it's doing that. Here is my program: (Toggle Plain Text) public static void main(String args[]) { System.out.println("Value Square Cube"); for (int n = 1; n <= 5; n++) { System.out.print(" "); System.out.print(n); System.out.print(" "); System.out.print(square(n)); System.out.print(" "); System.out.print(cube(n)); System.out.println(); } } static int square(int x) { return x * x; } static int cube(int y) { return y * y * y; } } public static void main(String args[]) { System.out.println("Value Square Cube"); for (int n = 1; n <= 5; n++) { System.out.print(" "); System.out.print(n); System.out.print(" "); System.out.print(square(n)); System.out.print(" "); System.out.print(cube(n)); System.out.println(); } } static int square(int x) { return x * x; } static int cube(int y) { return y * y * y; } }

Jul 5th, 2007, 6:55 PM	#2
Ben.Dougall Programmer Join Date: Jul 2007 Location: London, Ontario, Canada Posts: 34 Rep Power: 0	because of the space seperators... i would use a \t instead of " ". Once the squares hit 2 digits, it makes another space in the line of output. Heres what could pose a better solution (Toggle Plain Text) public static void main(String args[]) { System.out.println("Value\tSquare\tCube"); for (int n = 1; n <= 5; n++) { System.out.println( " " + n + "\t" + square(n) + "\t" + cube(n) ); } } static int square(int x) { return x * x; } static int cube(int y) { return y * y * y; } } public static void main(String args[]) { System.out.println("Value\tSquare\tCube"); for (int n = 1; n <= 5; n++) { System.out.println( " " + n + "\t" + square(n) + "\t" + cube(n) ); } } static int square(int x) { return x * x; } static int cube(int y) { return y * y * y; } }

Jul 5th, 2007, 7:20 PM	#5
357mag Hobbyist Programmer Join Date: Mar 2005 Posts: 148 Rep Power: 4	Well here is what I did. I wanted the numbers to print under the centers of the words Value, Square, and Cube, instead of at the left: (Toggle Plain Text) System.out.println( " " + n + "\t" + " " + square(n) + "\t" + " " + cube(n) ); System.out.println( " " + n + "\t" + " " + square(n) + "\t" + " " + cube(n) ); But when I look at the headings Value, Square, and Cube, the word Cube is spaced closer to the word Square, than Square is to Value. I don't know why that is. I want it to look evenly spaced between the words: (Toggle Plain Text) Value Square Cube Value Square Cube But instead it's looking more like this: (Toggle Plain Text) Value Square Cube Value Square Cube I got to try and fix it so it looks evenly spaced.

Jul 5th, 2007, 9:38 PM	#8
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	Use formatted output, space it as you like. (Toggle Plain Text) public static void main (String[] args) { System.out.println("Value Square Cube"); for (int n = 1; n <= 5; n++) { System.out.format ("%3d%10d%10d\n", n, nn, nnn); } } Output: Value Square Cube 1 1 1 2 4 8 3 9 27 4 16 64 5 25 125 public static void main (String[] args) { System.out.println("Value Square Cube"); for (int n = 1; n <= 5; n++) { System.out.format ("%3d%10d%10d\n", n, nn, nnn); } } Output: Value Square Cube 1 1 1 2 4 8 3 9 27 4 16 64 5 25 125 __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Jul 5th, 2007, 11:23 PM	#10
357mag Hobbyist Programmer Join Date: Mar 2005 Posts: 148 Rep Power: 4	I got it figured out. I did this: (Toggle Plain Text) System.out.format("%3d", n); System.out.format ("%10d", square(n)); System.out.format("%10d", cube(n)); System.out.println() System.out.format("%3d", n); System.out.format ("%10d", square(n)); System.out.format("%10d", cube(n)); System.out.println() My way is more work, but I really wanted to use the methods.

Jul 5th, 2007, 7:08 PM	#3
357mag Hobbyist Programmer Join Date: Mar 2005 Posts: 148 Rep Power: 4	I'll try your suggestion and hopefully it will work. But it doesn't explain why when we get to the Cube column, specifically when the number is 64 and then 125 that the output shifts over to the right even more. There are some numbers under the Square column that also have two digits in them, yet they print just fine.

Jul 5th, 2007, 7:45 PM	#6
Ben.Dougall Programmer Join Date: Jul 2007 Location: London, Ontario, Canada Posts: 34 Rep Power: 0	A quick fix would be add one or two spaces after the second \t... You could use if's and do checks to make it better, but for a minor program, I would use the quick fix.

Jul 5th, 2007, 9:34 PM	#7
357mag Hobbyist Programmer Join Date: Mar 2005 Posts: 148 Rep Power: 4	Yeah I guess that would work. Does anyone know why the words are not evenly spaced just by using the "\t" character? Why does the word Cube appear closer to the word Square, than Square does to Value? Seems to me all three words should be evenly spaced.

Jul 5th, 2007, 11:03 PM	#9
357mag Hobbyist Programmer Join Date: Mar 2005 Posts: 148 Rep Power: 4	What if I really like the idea of calling the methods to do the work? Is there a way to combine calling the Square and the Cube method, and still using the format function?

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Programming Forums > Application Development > Java

My output does not look right