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p354 反向迭代器的使用1 .cpp
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p354 反向迭代器的使用1 .cpp
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//p354 反向迭代器的使用1
#include <iostream>
#include <vector>
#include <iterator>
#include <algorithm>
#include <numeric>
using namespace std;
int main()
{
vector<int> vec;
//input
for (vector<int>::size_type i = 0; i != 10; i++)
vec.push_back(i);
//正向输出
cout << "正向输出:" << endl;
for (vector<int>::iterator iter = vec.begin(); iter != vec.end(); iter++)
cout << *iter << " " ;
cout << endl;
//反向输出
cout << "反向输出" <<endl;
for (vector<int>::reverse_iterator iter = vec.rbegin(); iter != vec.rend(); iter++)
cout << *iter << " "; //
cout << endl;
// sort(vec.begin(), vec.end());
sort(vec.rbegin(), vec.rend()); //反向排序
cout << "排序后正向输出:"<< endl;
for (vector<int>::iterator iter = vec.begin(); iter != vec.end(); iter++)
cout << *iter << " " ;
cout << endl;
return 0;
}
/*
正向输出:
0 1 2 3 4 5 6 7 8 9
反向输出
9 8 7 6 5 4 3 2 1 0
排序后正向输出:
9 8 7 6 5 4 3 2 1 0
请按任意键继续. . .
*/