题解 | 记数问题
记数问题
https://www.nowcoder.com/practice/28b2d9f2bf2c48de94a1297ed90e1732
#include <stdio.h>
#define N 1000000
int main()
{
int n,x;
scanf("%d %d",&n,&x);
int count = 0;
int i;
for(i = 1; i <= n; i++)
{
int m = i;
while(m)
{
if(m % 10==x)
{
count++;
}
m/=10;
}
}
printf("%d",count);
return 0;
}
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