(разн.) ← Предыдущая | Текущая версия (разн.) | Следующая → (разн.)
distance
#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
int main( ) {
vector<int> v;
v.push_back(0);
v.push_back(1);
v.push_back(2);
cout << v.size( ) << endl;
cout << distance(v.begin( ), v.end( )) << endl;
}3
3
Get the distance between two element in a list
/* The following code example is taken from the book
* "The C++ Standard Library - A Tutorial and Reference"
* by Nicolai M. Josuttis, Addison-Wesley, 1999
*
* (C) Copyright Nicolai M. Josuttis 1999.
* Permission to copy, use, modify, sell and distribute this software
* is granted provided this copyright notice appears in all copies.
* This software is provided "as is" without express or implied
* warranty, and with no claim as to its suitability for any purpose.
*/
#include <iostream>
#include <list>
#include <algorithm>
using namespace std;
int main()
{
list<int> coll;
// insert elements from -3 to 9
for (int i=-3; i<=9; ++i) {
coll.push_back(i);
}
// search element with value 5
list<int>::iterator pos;
pos = find (coll.begin(), coll.end(), // range
5); // value
if (pos != coll.end()) {
// process and print difference from the beginning
cout << "difference between beginning and 5: "
<< distance(coll.begin(),pos) << endl;
}
else {
cout << "5 not found" << endl;
}
}difference between beginning and 5: 8
