std::map max/min

[gareth19]

Is there a call to get these values?
Thx.

[Philip Nicoletti]

Could you explain what you want in a little more detail ?

begin() returns an iterator for the first element (which would be the
"min" for the key) . end() points to last element , so subtracting 1
points to last element.

#include <iostream>
#include <map>

using namespace std;

typedef std::map<int,int>  MAP;
typedef std::pair<int,int> PAIR;

int main()
{

    MAP squares_map;

    squares_map.insert( PAIR(2,4) );
    squares_map.insert( PAIR(0,0) );
    squares_map.insert( PAIR(1,1) );
    squares_map.insert( PAIR(6,36) );
    squares_map.insert( PAIR(3,9) );

    if (!squares_map.empty())
    {
        MAP::iterator it_min = squares_map.begin();

        MAP::iterator it_max = squares_map.end();  // points to just past last element
        --it_max;                                  // points to last element

        cout << "min element : " << it_min->first << " " << it_min->second << "\n";
        cout << "max element : " << it_max->first << " " << it_max->second << "\n";
    }

    return 0;
}

[gareth19]

Ok. Thx Philip, that is what I wanted.