C++primer 10.4.1节练习
练习10.26
back_inserter创建一个使用push_back的迭代器。
front_inserter创建一个push_front的迭代器。
Inserter创建一个使用insert的迭代器。此函数接收第二个参数，这个参数必须是一个指向给定容器的迭代器。元素将被插入到给定迭代器所表示的元素之前。
练习10.27
1 #include<iostream> 2 #include<string> 3 #include <iostream> 4 #include <string> 5 #include <vector> 6 #include <algorithm> 7 #include <list> 8 #include <functional> 9 #include <iterator> 10 using namespace std; 11 using namespace placeholders; 12 13 void elmDups(vector<string> &vec, list<string> &); 14 15 int main() 16 { 17 vector<string> words{ "the", "quick", "red", "fox", "jumps", "over","the", "slow","red","turtle" }; 18 list<string> li; 19 elmDups(words, li); 20 for (auto c : li) 21 cout << c << endl; 22 system("pause"); 23 return 0; 24 } 25 26 void elmDups(vector<string>& vec, list<string> &li) 27 { 28 sort(vec.begin(), vec.end()); 29 unique_copy(vec.begin(), vec.end(), back_inserter(li)); 30 }
练习10.28
1 #include <iostream> 2 #include <vector> 3 #include <list> 4 #include <algorithm> 5 6 using namespace std; 7 8 int main() 9 { 10 vector<int> vec; 11 list<int> vec2 = {10,11,12},vec3 = {10,11,12},vec4 = {10,11,12}; 12 for(int i = 1; i <= 9; ++i) 13 vec.push_back(i); 14 15 copy(vec.cbegin(), vec.cend(), front_inserter(vec2)); 16 for(auto it = vec2.begin(); it != vec2.end(); ++it) 17 cout << *it << " "; 18 cout << endl; 19 20 copy(vec.cbegin(), vec.cend(), back_inserter(vec3)); 21 for(auto it = vec3.begin(); it != vec3.end(); ++it) 22 cout << *it << " "; 23 cout << endl; 24 25 copy(vec.cbegin(), vec.cend(), inserter(vec4,vec4.begin())); 26 for(auto it = vec4.begin(); it != vec4.end(); ++it) 27 cout << *it << " "; 28 cout << endl; 29 return 0; 30 }
