算法练习题(一)——字母图形

/**
 * A~Z  65--90
 */
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        int n=scanner.nextInt();
        int m=scanner.nextInt();
        int temp=65;
        char [][]chars=new char[n][m];
        if (1 <= n&&m <= 26){
            for (int i = 0; i < n; i++) {
                for (int i1 = 0; i1 < m; i1++) {
                    if (i==i1){
                        chars[i][i1]=(char)65;
                    }else if (i1>i){
                        chars[i][i1]=(char)(65+i1-i);
                    }else {
                        chars[i][i1]=(char)(65+i-i1);
                    }
                    System.out.print(chars[i][i1]);
                }
                System.out.println();
            }
        }
    }
}