题解 | 记数问题
记数问题
https://www.nowcoder.com/practice/28b2d9f2bf2c48de94a1297ed90e1732
#include <iostream>
using namespace std;
void count()
{
int n=0,x=0,cnt=0;
cin >> n >> x;
for(int i=1;i<=n;i++){
int temp = i;
while(temp){
if(temp%10 == x) cnt++;
temp /= 10;
}
}
cout << cnt << endl;
}
int main() {
count();
return 0;
}
