关键词 • 3小时前
using namespace std;
int main() {
int n; // 输入的三位数个数
cin >> n;
// 定义10个变量,分别统计数字0~9出现的次数,初始化为0
int cnt0 = 0, cnt1 = 0, cnt2 = 0, cnt3 = 0, cnt4 = 0;
int cnt5 = 0, cnt6 = 0, cnt7 = 0, cnt8 = 0, cnt9 = 0;
int num; // 存放每个三位数
for (int i = 1; i <= n; i++) {
cin >> num;
// 提取百位、十位、个位
int bai = num / 100; // 百位
int shi = (num / 10) % 10; // 十位
int ge = num % 10; // 个位
// 根据百位数字,增加对应计数器
if (bai == 0) cnt0++;
else if (bai == 1) cnt1++;
else if (bai == 2) cnt2++;
else if (bai == 3) cnt3++;
else if (bai == 4) cnt4++;
else if (bai == 5) cnt5++;
else if (bai == 6) cnt6++;
else if (bai == 7) cnt7++;
else if (bai == 8) cnt8++;
else if (bai == 9) cnt9++;
// 根据十位数字,增加对应计数器
if (shi == 0) cnt0++;
else if (shi == 1) cnt1++;
else if (shi == 2) cnt2++;
else if (shi == 3) cnt3++;
else if (shi == 4) cnt4++;
else if (shi == 5) cnt5++;
else if (shi == 6) cnt6++;
else if (shi == 7) cnt7++;
else if (shi == 8) cnt8++;
else if (shi == 9) cnt9++;
// 根据个位数字,增加对应计数器
if (ge == 0) cnt0++;
else if (ge == 1) cnt1++;
else if (ge == 2) cnt2++;
else if (ge == 3) cnt3++;
else if (ge == 4) cnt4++;
else if (ge == 5) cnt5++;
else if (ge == 6) cnt6++;
else if (ge == 7) cnt7++;
else if (ge == 8) cnt8++;
else if (ge == 9) cnt9++;
}
// 输出结果,每行一个数字,从0到9
cout << cnt0 << endl;
cout << cnt1 << endl;
cout << cnt2 << endl;
cout << cnt3 << endl;
cout << cnt4 << endl;
cout << cnt5 << endl;
cout << cnt6 << endl;
cout << cnt7 << endl;
cout << cnt8 << endl;
cout << cnt9 << endl;
return 0;
}
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