Answer Posted / guest

public class Numbers {
public static void main(String[] args){
int i,j,n=4;
for(i=0;i<=n;i++){
System.out.println();
for(j=1;j<=n-i;j++)
System.out.print(j);
for(j=0;j<2*i;j++)
System.out.print(" ");
for(j=n-i;j>=1;j--)
System.out.print(j);
}
}
}

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