1: //unique_copy1a.cpp
3: #include <iostream>
4: #include <vector>
5: #include <algorithm>
6: using namespace std;
9: int main()
10: {
11: cout << "\nThis program illustrates the use of the STL unique_copy() "
12: "algorithm (default\nversion) to remove adjacent duplicate copies "
13: "of integer values from a vector\nof integers, and simultaneously "
14: "copy the remaining values to another vector.";
15: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
17: int a11[] = {1, 2, 2, 3, 3, 6, 5, 2, 6, 9, 12, 2, 2, 2, 9, 10, 11, 12};
18: vector<int> v11(a11, a11+18);
19: cout << "\nHere are the values in the source vector:\n";
20: for (vector<int>::size_type i=0; i<v11.size(); i++)
21: cout << v11.at(i) << " ";;
22: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
24: int a12[] = {21, 22, 23, 24, 25, 26, 27, 28, 29,
25: 30, 31, 32, 33, 34, 35, 36, 37, 38};
26: vector<int> v12(a12, a12+18);
27: cout << "\nHere are the values in the destination vector:\n";
28: for (vector<int>::size_type i=0; i<v12.size(); i++)
29: cout << v12.at(i) << " ";;
30: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
32: cout << "\nNow we remove all adjacent duplicate copies of the "
33: " values 2 and 3 from\nthe source vector and copy the remaining "
34: "values to the destination vector,\nstarting at the third value "
35: "in that destination vector.";
36: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
37: vector<int>::iterator output_end =
38: unique_copy(v11.begin(), v11.end(), v12.begin()+2);
40: cout << "\nHere are the (unchanged) source vector values:\n";
41: vector<int>::iterator p = v11.begin();
42: while (p != v11.end()) cout << *p++ << " ";
43: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
45: cout << "\nAnd here are the destination vector values:\n";
46: p = v12.begin();
47: while (p != v12.end()) cout << *p++ << " ";
48: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
50: cout << "\nThe iterator returned by the call to unique_copy() is "
51: "pointing to the value " << *output_end << ".";
52: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
53: }