题解 | #牛牛的字符菱形#

import java.util.Scanner;

public class Main{

public static void main(String[] args){
    Scanner scanner = new Scanner(System.in);
    char c = scanner.next().charAt(0);
    add(c,3,3,3);
    add(c,2,3,4);
    add(c,-1,-1,-1);
    add(c,2,3,4);
    add(c,3,3,3);
}
public static void add(char c , int first ,int mid ,int last){
    char[] cs = new char[5];
    char x = ' ';
    char y = c;
    if(first>0){
        for(int i = 0 ; i < cs.length ; i++){
            cs[i] = x;
            cs[first-1] = y ;
            cs[mid - 1] = y;
            cs[last-1] = y;
        }
    }else{
        for(int i = 0 ; i < cs.length ;i++){
            cs[i] = y;
        }
    }

    for(int i = 0 ; i<cs.length;i++){
        System.out.print(cs[i]);
    }
    System.out.println();
}

}