Mega Code Archive
Unite the ranges by using set_union()
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/* 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 <vector>
#include <deque>
#include <list>
#include <set>
#include <map>
#include <string>
#include <algorithm>
#include <iterator>
#include <functional>
#include <numeric>
/* PRINT_ELEMENTS()
* - prints optional C-string optcstr followed by
* - all elements of the collection coll
* - separated by spaces
*/
template <class T>
inline void PRINT_ELEMENTS (const T& coll, const char* optcstr="")
{
typename T::const_iterator pos;
std::cout << optcstr;
for (pos=coll.begin(); pos!=coll.end(); ++pos) {
std::cout << *pos << ' ';
}
std::cout << std::endl;
}
/* INSERT_ELEMENTS (collection, first, last)
* - fill values from first to last into the collection
* - NOTE: NO half-open range
*/
template <class T>
inline void INSERT_ELEMENTS (T& coll, int first, int last)
{
for (int i=first; i<=last; ++i) {
coll.insert(coll.end(),i);
}
}
using namespace std;
int main()
{
int c1[] = { 1, 2, 2, 4, 6, 7, 7, 9 };
int num1 = sizeof(c1) / sizeof(int);
int c2[] = { 2, 2, 2, 3, 6, 6, 8, 9 };
int num2 = sizeof(c2) / sizeof(int);
// print source ranges
cout << "c1: " ;
copy (c1, c1+num1, ostream_iterator<int>(cout," "));
cout << endl;
cout << "c2: " ;
copy (c2, c2+num2, ostream_iterator<int>(cout," "));
cout << '\n' << endl;
// unite the ranges by using set_union()
cout << "set_union(): ";
set_union (c1, c1+num1, c2, c2+num2, ostream_iterator<int>(cout," "));
cout << endl;
}
/*
c1: 1 2 2 4 6 7 7 9
c2: 2 2 2 3 6 6 8 9
set_union(): 1 2 2 2 3 4 6 6 7 7 8 9
*/
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