CheckerBox N by N

[mtarakji]

Hey guys, i got an assignment to write a java program that takes a command line argument (N) and creates a checkerBox like the one below if N is 5 :

* * * * *
* * * * *
* * * * *
* * * * *
* * * * *
Pleas notice the small detail that first line starts with a "*" and the second with a space, and so on ...

Till now, i have managed to write the folowing :

public class checkerboard
{
public static void main(String[] args)
{
int n = Integer.parseInt(args[0]);
int i;
for (i = 1; i<= n; i = i + 1)
{
System.out.print("* ");
}
System.out.println();
for (i = 1; i <= n; i = i + 1)
{
System.out.print(" *");
}

}
}

What this does is that it prints "*" N number of times, but only 2 lines, and not as many lines as N ... i am new to java and kinda stuck ... please, someone help ... ANYONE :D

[JosAH]

Hey guys, i got an assignment to write a java program that takes a command line argument (N) and creates a checkerBox like the one below if N is 5 :

* * * * *
* * * * *
* * * * *
* * * * *
* * * * *
Pleas notice the small detail that first line starts with a "*" and the second with a space, and so on ...

Till now, i have managed to write the folowing :

public class checkerboard
{
public static void main(String[] args)
{
int n = Integer.parseInt(args[0]);
int i;
for (i = 1; i<= n; i = i + 1)
{
System.out.print("* ");
}
System.out.println();
for (i = 1; i <= n; i = i + 1)
{
System.out.print(" *");
}

}
}

What this does is that it prints "*" N number of times, but only 2 lines, and not as many lines as N ... i am new to java and kinda stuck ... please, someone help ... ANYONE :D

Work yourself through this problem from the top to the bottom: you can print any
'square' like this:

for (int y= 0; y < N; y++) { // rows
   for (int x= 0; x < N; x++) // columns
      System.out.println(whatToPrint(y, x));
   System.out.println();
}
 

The method 'whatToPrint(int y, int x) determines what to print (sic) for a cell at
position (y,x) and returns a String. I'm sure you can figure things out from here.

kind regards,

Jos