10.4.2

最新推荐文章于 2025-05-07 14:19:53 发布

原创最新推荐文章于 2025-05-07 14:19:53 发布 · 334 阅读

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10.29

#include<iostream>
#include<iterator>
#include<string>
#include<fstream>
#include<vector>
using std::cin;
using std::cout;
using std::istream;
using std::string;


int main() {
    std::ifstream ifs("TXT.txt");
    std::istream_iterator<string> strit(ifs), eof;
    std::vector<string> vs;
    std::copy(strit, eof, back_inserter(vs));

    return 0;

10.30

#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>

int main()
{
    std::istream_iterator<int> in_iter(std::cin), eof;
    std::vector<int> vec;
    while (in_iter != eof)
        vec.push_back(*in_iter++);
    std::sort(vec.begin(), vec.end());
    std::copy(vec.cbegin(), vec.cend(), std::ostream_iterator<int>(std::cout, " "));
}

10.31

#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>

int main()
{
    std::istream_iterator<int> in_iter(std::cin), eof;
    std::vector<int> vec;
    while (in_iter != eof)
        vec.push_back(*in_iter++);
    std::sort(vec.begin(), vec.end());
    std::unique_copy(vec.cbegin(), vec.cend(), std::ostream_iterator<int>(std::cout, " "));
}

10.32

#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>
#include <numeric>
#include "../include/Sales_item.h"

int main()
{
    std::istream_iterator<Sales_item> in_iter(std::cin), in_eof;
    std::vector<Sales_item> vec;

    while (in_iter != in_eof)
        vec.push_back(*in_iter++);
    sort(vec.begin(), vec.end(), compareIsbn);
    for (auto beg = vec.cbegin(), end = beg; beg != vec.cend(); beg = end) {
        end = find_if(beg, vec.cend(), [beg](const Sales_item &item){ return item.isbn() != beg->isbn(); });
        std::cout << std::accumulate(beg, end, Sales_item(beg->isbn())) << std::endl;
    }
}

10.33

#include<fstream>
#include<iterator>
#include<algorithm>
int main() {
    std::ifstream ifs("TXT.txt");
    std::istream_iterator<int> in_itr(ifs), in_eof;
    std::ofstream ofs1("odd.txt");
    std::ofstream ofs2("even.txt");
    std::ostream_iterator<int> out_odd(ofs1, " "), out_even(ofs2, " ");
    std::for_each(in_itr,in_eof,
        [&out_odd, &out_even](int i) {*(i % 2 ? out_odd : out_even)++ = i; }
    );


    return 0;
}