cb09a_c++_顺序容器的操作2-在顺序容器中添加元素_插入数据

  1 /*cb09a_c++_顺序容器的操作2
  2 在顺序容器中添加元素
  3 vector不能向前插入数据，list可以用insert
  4 c.push_back(t);
  5 c.push_front(t);
  6 c.insert(p,t);在迭代器p,插入t
  7 c.insert(p,n,t);在迭代器p,插入n个t
  8 c.insert(p,b,e);把迭代器b,e之间的数据，插入到迭代器p指向的位置。
  9 容器元素都是副本
 10 添加元素可能会使迭代器失效
 11 避免存储end操作返回的迭代器
 12 
 13 welcome to discuss
 14 txwtech@163.com
 15 
 16 //vector<int>::iterator last = ivec2a.end();//不要这样写，不要提前保存。
 17 直接在某个地方用：ivec2a.end();
 18 while(first!=ivec2a.end())//这样既就ok咯。
 19 whiel(first!=last)//这样不好。不建议
 20 while(it!=)
 21 string sarray[4] = {"qusai","simba","frollo","scar"};//字符串数组
 22 const char *str[]= { "qusai","simba","frollo","scar" };//字符串数组
 23 */
 24 
 25 #include <iostream>
 26 #include <vector>
 27 #include <list>
 28 #include <deque>
 29 #include <string>
 30 
 31 using namespace std;
 32 int main()
 33 {
 34     vector<string> svec;
 35     list<string> slist;
 36     deque<string> sdeq;
 37 
 38     svec.push_back("Bill");
 39     svec.push_back("Tom");
 40     svec.push_back("Mary");
 41 
 42     
 43     slist.push_back("Bill");
 44     slist.push_back("Tom");
 45     slist.push_back("Mary");
 46 
 47     sdeq.push_back("Bill");
 48     sdeq.push_back("Tom");
 49     sdeq.push_back("Mary");
 50 
 51     slist.push_front("Primer");
 52     slist.push_front("C++");
 53 
 54     sdeq.push_front("Primer");
 55     sdeq.push_front("C++");
 56 
 57     for (list<string>::iterator iter = slist.begin();
 58         iter != slist.end(); ++iter)
 59         cout << "slist data: " << *iter << " " << endl;;
 60     cout << endl;
 61 
 62     list<string>::iterator it = slist.begin();
 63     cout << *it << endl;
 64     ++it;
 65     cout << *it << endl;
 66 
 67     //slist插入数据,迭代器所指向的数据的前面
 68     slist.insert(it,"hello");
 69     for (list<string>::iterator iter = slist.begin();
 70         iter != slist.end(); ++iter)
 71         cout << "slist data: " << *iter << " " << endl;;
 72     cout << endl;
 73 
 74     it = slist.begin();
 75     ++it;
 76     ++it;
 77     ++it;
 78     cout << *it << endl;//显示bill
 79 
 80     slist.insert(it, 10, "hi");//bill前面插入10个hi.
 81 
 82     string sarray[4] = {"qusai","simba","frollo","scar"};//字符串数组
 83     cout << sarray[0] << endl;
 84     const char *str[]= { "qusai","simba","frollo","scar" };//字符串数组
 85     cout << str[1] << endl;
 86 
 87     it = slist.begin();
 88     cout << *it << endl;//显示c++
 89     ++it;
 90     cout << *it << endl;//显示hello
 91 
 92     slist.insert(it, sarray + 1, sarray + 4);//把"simba","frollo","scar"插入到hello前面
 93 
 94     cout << "显示插入后的数据： " << endl;
 95     for (list<string>::iterator iter = slist.begin();
 96         iter != slist.end(); ++iter)
 97         cout << "slist data: " << *iter << " " << endl;;
 98     cout << endl;
 99 
100 
101     //vector<int> ivec2a;
102     list<int> ivec2a;
103     ivec2a.push_back(10);
104     ivec2a.push_back(20);
105     ivec2a.push_back(30);
106 
107     list<int>::iterator first = ivec2a.begin();
108     //vector<int>::iterator last = ivec2a.end();//不能这样写，不能提前保存。
109     //while (first != last)//不能这样写，不能提前保存。因为end在变化
110     while(first!=ivec2a.end())//这样既就ok咯。
111     {
112         ivec2a.insert(first,32);
113         ++first;
114     }
115     for(list<int>::iterator i=ivec2a.begin();
116         i!=ivec2a.end();++i)
117     { 
118         cout << *i << endl;
119     }
120 
121 
122     return 0;
123 }