我四处寻找解决此问题的方法，但无法找到任何东西。我相信这是一个快速修复，希望有人能发现我的错误并告诉我。
这是我所拥有的
#include<algorithm>
#include<vector>
void myFunction ( cont std::vector<std::vector<int> > &counts){
std::vector<int>::iterator max_it;
int index;
for ( int i = 0 ; i < counts.size() ; i ++ ){
max_it = std::max_element(counts[i].begin(), counts[i].end());
index = std::distance(counts[i].begin(),max_it);
}
}
编译上述代码时，调用 max_element 的行出现以下错误。
error: no match for ‘operator=’ in ‘it = std::max_element [with _ForwardIterator = __gnu_cxx::__normal_iterator<const int*, std::vector<int, std::allocator<int> > >](((const std::vector<int, std::allocator<int> >*)((const std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >*)counts)->std::vector<_Tp, _Alloc>::operator[] [with _Tp = std::vector<int, std::allocator<int> >, _Alloc = std::allocator<std::vector<int, std::allocator<int> > >](((long unsigned int)i)))->std::vector<_Tp, _Alloc>::begin [with _Tp = int, _Alloc = std::allocator<int>](), ((const std::vector<int, std::allocator<int> >*)((const std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >*)counts)->std::vector<_Tp, _Alloc>::operator[] [with _Tp = std::vector<int, std::allocator<int> >, _Alloc = std::allocator<std::vector<int, std::allocator<int> > >](((long unsigned int)i)))->std::vector<_Tp, _Alloc>::end [with _Tp = int, _Alloc = std::allocator<int>]())’
/usr/include/c++/4.2.1/bits/stl_iterator.h:637：注意：候选人是：__gnu_cxx::__normal_iterator > >& __gnu_cxx::__normal_iterator > >::operator=(const __gnu_cxx::__normal_iterator > >& )
我尝试了几种解决方案，主要涉及更改我声明 max_it 迭代器的方式。到目前为止没有任何效果，我无法破译错误消息。