プログラマ専用SNS ミクプラ

コード:

#include <cstdlib>
#include <stdexcept>
#include <utility>
#include <map>
#include <string>
#include <iostream>
#include <fstream>

int main(int argc, char* argv[])
try
{
	if (argc != 2)
		throw std::invalid_argument("no input files");
	std::ifstream ifs(argv[1]);
	ifs.exceptions(std::ios::badbit);
	std::multimap<unsigned long, std::string> m;
	std::string str;

	while (std::getline(ifs, str))
	{
		auto pos = str.find(' ') + 1;
		auto count = std::stoul(str.substr(pos));
		m.insert(std::make_pair(count, str));
	}
	for (auto first = m.crbegin(), last = m.crend(); first != last; )
	{
		auto count = first->first;
		do
		{
			std::cout << first->second;
			++first;
		} while (first != last && first->first == count && std::cout << ' ');
		std::cout << std::endl;
	}
}
catch (std::exception& e)
{
	std::cerr << argv[0] << ": " << e.what() << std::endl;
	return EXIT_FAILURE;
}

コード:

struct rulong {
    unsigned long x;
    rulong(unsigned long x) : x(x) { }
    operator unsigned ulong() const { return x; }
    bool operator<(const rulong y) const { return y.x < x; }
};

コード:

#include <stdio.h>
#include <string.h>

#define N 1000

struct { int count; char *date; } m[N];

int main(void)
{
    int i, n, count;  char date[16];

    for (n = 0; n < N && scanf("%s%d", date, &count) == 2; n++) {
        for (i = n; i > 0 && m[i-1].count < count; i--) m[i] = m[i-1];
        m[i].count = count,  m[i].date = strdup(date);
    }
    for (i = 0; i < n; i++)
        printf("%s %d%s", m[i].date, m[i].count,
            i+1 < n && m[i+1].count == m[i].count ? "\n" : "  ");
    return 0;
}

コード:

#include <cstdlib>
#include <stdexcept>
#include <utility>
#include <map>
#include <string>
#include <iostream>
#include <fstream>
#include <functional>

int main(int argc, char* argv[])
try
{
	if (argc != 2)
		throw std::invalid_argument("no input files");
	std::ifstream ifs(argv[1]);
	ifs.exceptions(std::ios::badbit);
	std::multimap<unsigned long, std::string, std::greater<unsigned long>> m;
	std::string str;

	while (std::getline(ifs, str))
	{
		auto pos = str.find(' ') + 1;
		auto count = std::stoul(str.substr(pos));
		m.insert(std::make_pair(count, str));
	}
	for (auto first = m.cbegin(), last = m.cend(); first != last; )
	{
		auto count = first->first;
		do
		{
			std::cout << first->second;
			++first;
		} while (first != last && first->first == count && std::cout << ' ');
		std::cout << std::endl;
	}
}
catch (std::exception& e)
{
	std::cerr << argv[0] << ": " << e.what() << std::endl;
	return EXIT_FAILURE;
}