Answer Posted / rajesh

public class Triangle {

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.print(" ");
}
sp=sp-1;
for(j=1;j<=i;j++)
{
System.out.print(" "+j);
}
System.out.println();
}
}

}

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