comp sci question

Question

Write a program that produces an ASCII art representation of an hourglass using nested for loops. Use a class constant to make it possible to change the height of the hourglass.

Output when a class constant named SIZE is set to a value of 2:

|======|

\[4 spaces]/

\[2 spaces]/

||

/::\

/::::\

|======|

Output when a class constant named SIZE is set to a value of 3:

|========|

\[[6 spaces]/

\[4 spaces]/

\[2 spaces]/

||

/::\

/::::\

/::::::\

|========|

please put the amount of spaces that is stated in the place of the square brackets (and the stuff within them)

Answer 1

class AsciiHourglass

{

private int N;

public AsciiHourglass( int n) { N=n; }

public int Get() { return(N); }

public void Draw()

{

int maxN = 2*(N+1);

int Nn = N+1;

for (int iLoop=0; iLoop<Nn; iLoop++)

{

if (iLoop==0)

{

System.out.print("|");

}

else

{

System.out.print("\\");

}

for (int jLoop=0; jLoop<maxN; jLoop++)

{

if (iLoop==0)

{

System.out.print("=");

}

else

{

System.out.print(" ");

}

}

if (iLoop==0)

{

System.out.print("|");

}

else

{

System.out.print("/");

}

System.out.println("");

maxN-=2;

} //for loop

System.out.println("||");

maxN = 2;

Nn = N+1;

for (int iLoop=0; iLoop<Nn; iLoop++)

{

if (iLoop==(Nn-1))

{

System.out.print("|");

}

else

{

System.out.print("/");

}

for (int jLoop=0; jLoop<maxN; jLoop++)

{

if (iLoop==Nn-1)

{

System.out.print("=");

}

else

{

System.out.print(":");

}

}

if (iLoop==Nn-1)

{

System.out.print("|");

}

else

{

System.out.print("\\");

}

System.out.println("");

maxN+=2;

} //for loop

}

public static void main(String args[])

{

int N=-1;

if (args.length>0)

{

N = Integer.parseInt(args[0]);

}

while (N<=0)

{

System.out.print("Please input # N:>");

String inbuff = System.console().readLine();

N = Integer.parseInt(inbuff);

}

AsciiHourglass x = new AsciiHourglass(N);

x.Draw();

}

}