基础练习 字母图形

Posted 2020-08-19 Luking

 

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不知道说啥

感觉好像偏离主体思想了

但是这样写好简单

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算法

 1 import java.util.*;
 2 public class Main {
 3     public static void main(String[] args) {
 4         Scanner sc = new Scanner(System.in);
 5         int n = sc.nextInt();
 6         int m = sc.nextInt();
 7         char[] ch = {\'A\',\'B\',\'C\',\'D\',\'E\',\'F\',\'G\',\'H\',\'I\',\'J\',\'K\',\'L\',\'M\',\'N\',
 8                 \'O\',\'P\',\'Q\',\'R\',\'S\',\'T\',\'U\',\'V\',\'W\',\'X\',\'Y\',\'Z\'};
 9         String st = "";
10         for(int i=0;i<m;i++)
11             st += ch[i];
12         for(int i=0;i<n;i++){
13             String st1,st2;
14             if(i!=0){
15                 st1 = st.substring(0, st.length()-1);
16                 st2 = ch[i]+"";
17                 st = st2+st1;
18             }
19             System.out.println(st);
20         }
21     }
22 }