【STL】-迭代器的用法

初始化：

list<char>::iterator pos;

算法：

1. 遍历

　　for(pos = col1.begin(); pos != col1.end(); ++pos){...}

代码：

 1 #include <iostream>
 2 #include <vector>
 3 #include <deque>
 4 #include <set>
 5 #include <algorithm>
 6 #include <iterator> //for ostream_iterator&istream_iterator
 7 #include "utility.h"
 8 using namespace std;
 9 
10 int main() {
11     vector<int> v;
12     vector<int>::iterator pos;
13 
14     for(int i = 6; i >= 1; i--)
15         v.push_back(i);
16 
17     //back_inserter调用push_back(), 适用于vector, deque, list
18     vector<int> col1;
19     copy(v.begin(), v.end(), back_inserter(col1));
20     PRINT_ELEMENT(col1);
21 
22     //front_inserter调用push_front()，适用于deque, list
23     deque<int> col2;
24     copy(v.begin(), v.end(), front_inserter(col2));
25     PRINT_ELEMENT(col2);
26 
27     //inserter调用inserter(), 适用于所有容器
28     set<int> col3;
29     copy(v.begin(), v.end(), inserter(col3, col3.end()));
30     PRINT_ELEMENT(col3);
31 
32     //ostream iterator
33     copy(col3.rbegin(), col3.rend(), ostream_iterator<int>(cout, " "));
34     cout << endl;
35 
36     //istream iterator
37     vector<string> col4;
38     copy(istream_iterator<string>(cin), istream_iterator<string>(), back_inserter(col4));
39     PRINT_ELEMENT(col4);
40     return 0;
41 }

输出：

$ ./a.exe
content:
6 5 4 3 2 1
content:
1 2 3 4 5 6
content:
1 2 3 4 5 6
6 5 4 3 2 1
abd adfasdf assdfasdf afewaf 1a `1111 adsfasdf
content:
abd adfasdf assdfasdf afewaf 1a `1111 adsfasdf