题解 | 数字统计
数字统计
https://www.nowcoder.com/practice/179d9754eeaf48a1b9a49dc1d438525a
#include <stdio.h>
int count(int x,int y){
int i = 0;
int flag = 0;
for(i = x;i<=y;i++)
{
int sum = i;
while(sum>0)
{
if (sum%10==2) {
flag++;
}
sum/=10;
}
}
return flag;
}
int main() {
int L = 0;
int R = 0;
scanf("%d %d",&L,&R);
int count1 = count(L,R);
printf("%d",count1);
return 0;
}
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