Answer Posted / subash chandra bose l

class Tri
{
public static void main(String args[])
{
int i,j,k,sp=30;
for(i=1;i<=5;i++)
{
for(k=0;k<sp;k++)
{
System.out.println(" ");
}
sp=sp-2;
for(j=1;j<=i;j++)
{
System.out.println(" "+j);
}
}
}
}
this will print up to 5 rows and if u want more rows to be
printed you can increase the i<=n where n may be the number
of rows you want to print.

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