全部回复 共 3 条

1. 刘谦 #1 · 2022-07-18

   include

   using namespace std;

   int main() {

   char a;
   int c = 0;
   while ((a = getchar()) != '\n') {
   	if (a == 'A') {
   		c++;
   	}
   }
   printf("%d", c);
   return 0;
   

   }

2. 刘谦 #2 · 2022-07-18

   include

   include

   using namespace std;

   int main() {

   string a;
   cin >> a;
   int c = 0;
   int x = a.size();
   for (int i = 0; i < x; i++) {
   	if (a[i] == '7') {
   		c++;
   	}
   }
   printf("%d", c);
   return 0;
   

   }

3. 刘谦 #3 · 2022-07-18

   include <bits/stdc++.h>

   using namespace std;

   int main() {

   int score[100001], n, k;
   scanf("%d", &n);
   scanf("%d", &k);
   for (int i = 0; i < n; i++) {
   	scanf("%d", &score[i]);
   }
   for (int i = 0; i < n - 1; i++) {
   	for (int j = 0; j < n - 1 - i; j++) {
   		if (score[j] > score[j + 1]) {
   			int t = score[j];
   			score[j] = score[j + 1];
   			score[j + 1] = t;
   		}
   	}
   }
   for (int i = 0; i < n; i++) {
   	printf("%d ", score[k - 1]);
   	return 0;
   }
   return 0;
   

   }