Problem H: 字母阵列

Problem H: 字母阵列

Time Limit: 1 Sec  Memory Limit: 128 MB
Submit: 84  Solved: 61
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Description

 输入正整数N,1≤N≤26,输出菱形字母阵列(菱形的对角线长为2N-1

Sample Input Copy

1

3

Sample Output Copy

A

  A
 ABA
ABCBA
 ABA
  A