C + + Sort Descending sort

Source: Internet
Author: User

Sort is a function template provided in C + + STL that can be used to sort multiple types.

The default is ascending sort. There are two ways to use it:

Default (1)
Template <class randomaccessiterator>  void sort (randomaccessiterator first, Randomaccessiterator last);
Custom (2)
Template <class Randomaccessiterator, class compare>  void Sort (randomaccessiterator first, Randomaccessiterator last, Compare comp);

By using the second method, a new comparison operation is provided to enable a descending sort.

For example, I have a vector<string> Str_vec, the following code can be implemented:

struct GREATER

{

Template <typename t>

BOOL Operator () (const T &a, const T &b) {return a > B;}

};

Sort (Str_vec.begin (), str_vec.end (), Greater ()); Using the example

C + + Sort Descending sort

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