Trianglur Design--找规律

水题直接贴代码吧

Code:

#include <cstdio>#include <cstring>#include <algorithm>using namespace std;int n;int a[25];int main() {while(scanf("%d", &n) != EOF) {for(int i = 1; i <= n; i++) {a[i] = (2*(i-1)+1)%10;for(int j = 1; j < i; j++) {if(a[i+j-1] == 0) a[i-j] = a[i+j] = 9;else a[i-j] = a[i+j] =  a[i+j-1]-1;}for(int k = 1; k <= 2*(i-1)+1; k++)printf("%d", a[k]);printf("\n");}} return 0;}