题解 | 记数问题
记数问题
https://www.nowcoder.com/practice/28b2d9f2bf2c48de94a1297ed90e1732
#include <stdio.h>
int main() {
int n=0;
int x=0;
int i=1;
int sum=0;
scanf("%d %d",&n,&x);
for(i=1;i<=n;i++){
int j=i;
while(j>0){
if(j%10==x){
sum++;
}
j=j/10;
}
}
printf("%d",sum);
return 0;
}