它会将等于枢轴的元素放在一起,然后对小于枢轴和大于枢轴的部分分别进行处理。 // [__first, __i) == *__first and *__first < [__i, __last)// The first part is sorted,if(__nth<__i){return;}// __nth_element the second part// _VSTD::__nth_element<_Compare>(__i, __nth, _...
[mid_value](constint&value) {std::cout<< value <<"\t"; });std::cout<<std::endl;constintnth_ele =2;vector<int> array2 = {2,3,-1,5,0,11,1};std::vector<int>::iterator nthvalue = array2.begin() + nth_ele;std::nth_element(array2.begin(), nthvalue, array2.end(), [...
}intmain(){//to see how it's initializedvector<int> arr{4,1,2,3,6,7,5};cout<<"Printing initially...\n"; print(arr);//find 3rd element if list was sortednth_element(arr.begin(), arr.begin() +3, arr.end());cout<<"the 3rd element if the list was sorted is:"<< arr[3...
nth_element 是部分排序算法,它重排 [first, last) 中元素,使得: nth 所指向的元素被更改为假如 [first, last) 已排序则该位置会出现的元素。 这个新的 nth 元素前的所有元素小于或等于新的 nth 元素后的所有元素。 更正式而言, nth_element 以升序部分排序范围 [first, last) ,使得对于任何范围 [first,...
voidnth_element(ExecutionPolicy&&policy, RandomIt first, RandomIt nth, RandomIt last); (2)(since C++17) template<classRandomIt,classCompare> voidnth_element(RandomIt first, RandomIt nth, RandomIt last, Compare comp); (3)(constexpr since C++20) ...
nth_element是部分排序算法,它重新排列[first,last)中的元素,使得:
c++ 标准库 sort() 默认采用 < 这个 operator 来排序的, 另个一个重载函数增加第三个参数,指定一个...
the element, you can't guess what would be the arrangement. It depends on the compiler. What you can get assured is that the elements preceding the nth element would be all smaller than the nth element and the element which comes after the nth element are greater than the nth element. ...
cat(c(1,2,3),c(4,5,6))1 2 3 4 5 6cat函数,只能链接数据类型相同的向量若数据类型不同则...
#include <stdio.h> int n; int a[100];//测试100个元素以内 int count; int f(int k) {...