HDU - 2091 空心三角形

题目链接:https://vjudge.net/problem/HDU-2091

  这个题没什么好说的,主要就是找规律和考验格式控制,直接看代码吧

#include<set>
#include<map>
#include<stack>
#include<queue>
#include<cmath>
#include<cstdio>
#include<cctype>
#include<string>
#include<vector>
#include<climits>
#include<cstring>
#include<cstdlib>
#include<iostream>
#include<algorithm>
#define max(a, b) (a > b ? a : b)
#define min(a, b) (a < b ? a : b)
#define mst(a) memset(a, 0, sizeof(a))
#define _test printf("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n")
using namespace std;
typedef long long ll;
typedef pair<int, int> P;
const double eps = 1e-7;
const int INF = 0x3f3f3f3f;
const ll ll_INF = 233333333333333;
const int maxn = 1e3 + 10;
int main(void) {
    char ch;
    int n, kase = 0;
while(~scanf("%c %d%*c", &ch, &n) && ch != '@') {
        if (kase++)
            putchar('\n'); //每组输出之间用空行隔开
        for (int i = 0; i<n; ++i) {
            for (int j = 1; j<=n+i; ++j) {
                if (i != n-1)
                    printf(i+j==n || j-i==n ? "%c" : " ", ch); //输出1到n-1行 通过观察可以发现,除了最后一行ch只出现在i+j和j-i两列
                else 
                    printf("%c", ch); //输出最后一行
            }
            putchar('\n');
        }
    }
    return 0;

  

posted @ 2019-12-10 22:11  shuitiangong  阅读(229)  评论(0编辑  收藏  举报