快速排序 sort

C++自学精简教程 目录(必读)​​​​​​​

sort可以对vector的元素进行排序

1. sort对vector的元素排序

按从小到大排

#include 
#include 
#include 
 
int main(void)
{
    std::vector<int> arr{ 1,3,5,7,9,2,4,6,8 };
    //对vector的所有元素排序 a < b < c ...
    std::sort(arr.begin(), arr.end());
    for (auto ele : arr)
    {
        std::cout << ele << " ";
    }
 
    return 0;
}

输出：

2. sort对vector排序

按字母顺序排

#include 
#include 
#include 
#include 
 
int main(void)
{
    std::vector arr{ "zhang_san","li_si","wang_er","ma_zi","cao_cao", "liu_bei"};
    std::sort(arr.begin(), arr.end());
    for (auto ele : arr)
    {
        std::cout << ele << std::endl;
    }
 
    return 0;
}

输出：