C++ 去除重复项

要求

// 要求：将 str 中重复项去除 
string str{"A1","A8","A2","A2","A8","A3","A1","A4"};

小二上代码

#include <iostream>
#include <string>
#include <vector>
#include <algorithm> // 包含此头文件

// 去除重复项并排序
void removeRepeat(std::vector<std::string> &items)
{
	std::sort(items.begin(), items.end());                // 排序一下项，把相邻的项放在一起
	auto end_unique = unique(items.begin(), items.end()); // 把重复的项放在最后
	items.erase(end_unique, items.end());				  // 去掉重复的项
}

// 主函数
int main()
{	
	std::vector<std::string> items{ "A1","A8","A2","A2","A8","A3","A1","A4" };
	
	std::cout << std::endl << "去除重复项并排序前：";
	for (auto item : items)
		std::cout << item << " ";

	removeRepeat(items); // 去除重复项并排序

	std::cout << std::endl << "去除重复项并排序后：";
	for (auto item : items) 
		std::cout << item << " ";

	return 0;
}

调试结果：

_End

完事儿。