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- public class EsFiltro{
- public static void car(int n){
- char val='A';
- for(int i=0;i<n;i++){
- System.out.print(val);
- if(i!=n-1)
- System.out.print(" ");
- val=(char)(val+1);
- }
- }
- public static void main(String[] args){
- int n=Integer.parseInt(args[0]);
- if(n<0)
- System.out.println("Errore");
- else
- if(n>0) {
- if(n>1)
- for(int i=1; i<n; i++) {
- car(i);
- System.out.println();
- }
- car(n);
- if(n>1){
- System.out.println();
- for(int j=n-1;j>=1;j--) {
- car(j);
- if(j!=1)
- System.out.println();
- }
- }
- }
- }
- }
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