339A

复制代码#include <iostream> #include <string> #include <algorithm> using namespace std; #define maxSize 105 int main() { string exp; int digit[maxSize]; int length,index; while(cin>>exp) { length=exp.size(); index=0; for(int i=0; i<length; i+=2) digit[index++]=exp[i]-'0'; sort(digit,digit+index); cout<<digit[0]; if(index>1) { for(int i=1; i<index; ++i) cout<<'+'<<digit[i]; } cout<<endl; } return 0; }

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#include <iostream>
#include <string>
#include <algorithm>
using namespace std;
#define maxSize 105
int main()
{
string exp;
int digit[maxSize];
int length,index;
while(cin>>exp)
{
length=exp.size();
index=0;
for(int i=0; i<length; i+=2)
digit[index++]=exp[i]-'0';
sort(digit,digit+index);
cout<<digit[0];
if(index>1)
{
for(int i=1; i<index; ++i)
cout<<'+'<<digit[i];
}
cout<<endl;
}
return 0;
}