题解 | #去除字符串中重复的字符#

#include <iostream>
// write your code here......
#include <set>

using namespace std;

int main() {

    char str[100] = { 0 };
    cin.getline(str, sizeof(str));

    // write your code here......
    set<char> s;
    int i = 0;
    while(str[i]) s.insert(str[i++]);

    for(set<char>::iterator itr = s.begin(); itr != s.end(); ++itr)
        cout << *itr;
    cout << endl;

    return 0;
}