PAT乙级1021 个位数统计 (15 分)

Posted 2021-06-19 辉小歌

https://pintia.cn/problem-sets/994805260223102976/problems/994805300404535296

#include<cstdio>
#include<iostream>
#include<string>
using namespace std;
int a[15];
int main(void)
{
	string s; cin>>s;
	for(int i=0;i<s.size();i++) a[s[i]-'0']++; 
	for(int i=0;i<=9;i++)
		if(a[i]) cout<<i<<":"<<a[i]<<endl;
	return 0;
}