编辑代码

#include<bits/stdc++.h>
using namespace std;
char a[30];

int main(){
    int n;
    int k=0;
    int count=0;
    char s;
    while(~scanf("%c",&s)) {
        k++;
        if(s=='\n'){
            sort(a,a+count);
            for(int i=0;i<count;i++){
                if(a[i]!=' ') {
                    cout << a[i] << " ";
                }
            }
            cout<<endl;
            count=0;
            memset(a,0,sizeof(a)/sizeof(char));
        }
        else if(s!=' '){
            a[count]=s;
            count++;
        }

    }

    return 0;
}