善用STL
#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
using namespace std;
int main()
{
string str;
cin >> str;
vector<string> toSort;
for (int i = 0; i < str.size(); ++i) //分割子串
toSort.push_back(str.substr(i));
sort(toSort.begin(), toSort.end()); //默认字典序排序
for (int i = 0; i < toSort.size(); ++i)
cout << toSort[i] << endl;
return 0;
}