题解 第二章暴力求解|#叠筐#

把一个个大小差一圈的筐叠上去,使得从上往下看,边框花色交错

输入:三元组,外筐尺寸(必须是奇数),中心字符,边筐字符,均为ASCII

输出:叠在一起的筐筐图案,边筐角被打磨掉

例如输入:

11 B A
5 @ W

得到:

11 B A
 BBBBBBBBB 
BAAAAAAAAAB
BABBBBBBBAB
BABAAAAABAB
BABABBBABAB
BABABABABAB
BABABBBABAB
BABAAAAABAB
BABBBBBBBAB
BAAAAAAAAAB
 BBBBBBBBB
5 @ W
 @@@ 
@WWW@
@W@W@
@WWW@
 @@@

代码如下:

#include <iostream>
#include <cstdlib>
#include <cstdio>
using namespace std;
void BasketWeaving(char (*Pres)[80],
                   int Num,
                   char CenterChar,
                   char OtherChar)
{
    //对于每一个筐
    //边长分别为Num,Num-2,Num-4...1
    //其中Num必须为奇数
    //边筐的中心点坐标为Num/2
    //边筐的层数为0-Num/2(最外层为0层)
    //边筐的左上坐标为(i,i),右下为(Num-1-i)
    int Layer = Num / 2;

    //逐层打印
    for (int i = 0; i <= Layer; i++)
    {
        //确定当前层的符号
        char PresentChar;
        if (i % 2 == 0)
            PresentChar = CenterChar;
        else
            PresentChar = OtherChar;

        //第一个for循环打印顶层
        for (int top = i; top <= Num - 1 - i; top++)
            Pres[i][top] = PresentChar;
        //第二个for循环打印中间层
        for (int middle = i + 1; middle <= Num - 2 - i; middle++)
        {
            Pres[middle][i] = PresentChar;
            Pres[middle][Num - 1 - i] = PresentChar;
        }
        //第三个for循环打印底层
        for (int bottom = i; bottom <= Num - 1 - i; bottom++)
            Pres[Num - 1 - i][bottom] = PresentChar;
    }

    //将最外层边角磨平
    Pres[0][0] = ' ';
    Pres[Num - 1][Num - 1] = ' ';
    Pres[0][Num - 1] = ' ';
    Pres[Num - 1][0] = ' ';
}
int main()
{
    char Pres[80][80] = {0};
    int Num;
    char CenterChar, OtherChar;
    while (cin >> Num >> CenterChar >> OtherChar)
    {
        BasketWeaving(Pres,
                      Num,
                      CenterChar,
                      OtherChar);
        for (int i = 0; i < Num; i++)
        {
            for (int j = 0; j < Num; j++)
                cout << Pres[i][j];
            cout << '\n';
        }
    }
    return 0;
}
/*
5 s g
 sss 
sgggs
sgsgs
sgggs
 sss
*/
/*
13 % #
 %%%%%%%%%%% 
%###########%
%#%%%%%%%%%#%
%#%#######%#%
%#%#%%%%%#%#%
%#%#%###%#%#%
%#%#%#%#%#%#%
%#%#%###%#%#%
%#%#%%%%%#%#%
%#%#######%#%
%#%%%%%%%%%#%
%###########%
 %%%%%%%%%%%
*/