lexicographical_compare
Compares element by element between two sequences to determine which is lesser of the two.(以字典排列方式进行比较)
template<class InputIterator1, class InputIterator2> bool lexicographical_compare( InputIterator1 _First1, InputIterator1 _Last1, InputIterator2 _First2, InputIterator2 _Last2 ); template<class InputIterator1, class InputIterator2, class BinaryPredicate> bool lexicographical_compare( InputIterator1 _First1, InputIterator1 _Last1, InputIterator2 _First2, InputIterator2 _Last2, BinaryPredicate _Comp );
Return Value
true if the first range is lexicographically less than the second range; otherwise false.