Answer Posted / varun

public class HelloWorld{

public static void main(String []args){
int k=1;
for(int i=0;i<4;i++)
{
for(int j=0;j<=i;j++)
{
if(i%2==0)
System.out.print("@");
else
System.out.print(++k);
}
System.out.println();
k=0;
}
}
}

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