@java Blue Bridge Cup Group B Exercise Basics (30) Third question: graphics letters

@java Blue Bridge Cup Group B Exercise Basics (30) Third question: graphics letters

Keywords: loop, string

Problem Description

Use of the letters can form some beautiful graphics, an example is given below:

ABCDEFG

BABCDEF

CBABCDE

DCBABCD

EDCBABC

This is a pattern row 5 7, find the pattern of this rule, and outputs a pattern of n rows and m columns.

Input format
input line, comprising two integers n and m, respectively represent the number of columns you want output line pattern.
Output format
output n lines, each m characters, for your pattern.
Input Sample
57
Sample Output
ABCDEFG
BABCDEF
CBABCDE
DCBABCD
EDCBABC
data size and Conventions
1 <= n, m <= 26.

Code:

public class Main {
	public static void main(String[] args) {
		java.util.Scanner s=new java.util.Scanner(System.in);
		int n=s.nextInt();
		int m=s.nextInt();
		char str;
		char[][] shu=new char[26][26];
		for(int i=0;i<n;i++){
			str='A';
			for(int j=i;j<m;j++){
				shu[i][j]=str++;
			}
			str='A';
			for(int j=i-1;j>=0;j--){
				shu[i][j]=++str;
			}
		}
		for(int i=0;i<n;i++){
			for(int j=0;j<m;j++){
				System.out.print(shu[i][j]);
			}
			System.out.println();
		}
	}
}