字母图形
public class lanqiao1 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int n = scanner.nextInt();
int m = scanner.nextInt();
scanner.close();
int[] a = new int[26];
for(int i=0;i<26;i++) {
a[i] = 65+i; //或者写成 a[i] = 'A'+i
}
for(int i=0;i<n;i++) {
for(int j=i;j>i-m &&j>-1;j--) {
System.out.print((char)a[j]);
}
for(int k=1;k<m-i;k++) {
System.out.print((char)a[k]);
}
System.out.println();
}
}
}