泛型算法例子

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<numeric>

using namespace std;

void output(string s)
{
	cout << s << " ";
}

void elimDups(vector<string> &words)//删除相同单词，并进行排序
{
	sort(words.begin(), words.end());//排序
	auto unique_words = unique(words.begin(), words.end());
	words.erase(unique_words, words.end());//删除重复
}

void biggest(vector<string> &words, string::size_type sz)
{
	elimDups(words);

	stable_sort(words.begin(), words.end(),
		[](const string &a, const string &b)
			{return a.size() < b.size(); });//按长度排列

	auto wc = find_if(words.begin(), words.end(), [sz](const string &a){return a.size() >= sz; });//获取比指定长度长的单词

	auto count = words.end() - wc;
	cout << count << endl;
	
	/*for_each(wc, words.end(),
		[](const string &s){cout << s << " "; });*/

	for_each(wc, words.end(),output);

	cout << endl;
}
void main()
{
	vector<string> vec;

	cout << "请输入一行英文(输入Ctrl+z结束)：" << endl;
	string str;
	while (cin>>str && (str!="EOF"))
	{
		vec.push_back(str);
	}
	
	/*vec.push_back("sdf");
	vec.push_back("dsfd");
	vec.push_back("fgf");
	vec.push_back("gfgf");
	vec.push_back("sdf");
	vec.push_back("asd");*/

	biggest(vec, 4);
	//for_each(vec.begin(), vec.end(), output);
}