A. Helpful Maths水题

Posted 2021-09-26 幽殇默

#include<bits/stdc++.h>
using namespace std;
string s;
vector<int>ve;
int main(void)
{
	cin>>s; 
	int sum=0;
	for(int i=0;i<s.size();i++)
	{
		if(s[i]!='+')  
		{
			sum=sum*10+s[i]-'0';
		}
		else
		{
			ve.push_back(sum);
			sum=0;
		}
	}
	ve.push_back(sum);
	sort(ve.begin(),ve.end());
	for(int i=0;i<ve.size();i++)
	{
		if(i) cout<<"+";
		cout<<ve[i];
	}
	return 0;
}