生成字典序排列（C++ STL） next_permutation函数

生成下一个字典序排列

#include <algorithm>

bool next_permutation( iterator start, iterator end );

The next_permutation() function attempts to transform the given range of elements [start,end) intothe next

lexicographically greater permutation of elements. If it succeeds, it returns true, otherwise, itreturns false.