解题输入一个字符，最后输出金字塔

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        Object object = scanner.next();
        testA(object);

    }

    public static void testA(Object obj){
        String a = " ";
        int x = 1;
        for (int i = 5 ; i > 0 ; i--){
            for (int j = 0 ; j < i - 1; j++){
                System.out.print(a);
            }

            for (int k = 1 ; k <= x*2 -1 ; k++){
                if (k%2==0){
                    System.out.print(a);
                }else {
                    System.out.print(obj);
                }
            }
            x++;
            System.out.println();
        }
    }
}