这是计算子数组最大和的函数
int Solution::maxSubArray(const vector<int> &A) {
vector<int>::iterator i;
int max_so_far = *A.begin();
int current_max = *A.begin();
for(i = A.begin(); i != A.end(); ++i)
{
current_max = max(*i,*i+current_max);
max_so_far = max(max_so_far,current_max)
}
return max_so_far;
这是错误,我得到的是 C++11 而不是以前的版本。帮我解决这个问题
solution.cpp: In member function 'int Solution::maxSubArray(const std::vector<int>&)':
solution.cpp:9:8: error: no match for 'operator=' (operand types are 'std::vector<int>::iterator {aka __gnu_cxx::__normal_iterator<int*, std::vector<int> >}' and 'std::vector<int>::const_iterator {aka __gnu_cxx::__normal_iterator<const int*, std::vector<int> >}')
for(i = A.begin(); i != A.end(); ++i)
^
solution.cpp:9:8: note: candidates are:
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
from /usr/include/c++/4.8/bits/char_traits.h:39,
from /usr/include/c++/4.8/ios:40,
from /usr/include/c++/4.8/ostream:38,
from /usr/include/c++/4.8/iostream:39,
from solution.h:7,
from solution.cpp:-3:
/usr/include/c++/4.8/bits/stl_iterator.h:708:11: note: __gnu_cxx::__normal_iterator<int*, std::vector<int> >& __gnu_cxx::__normal_iterator<int*, std::vector<int> >::operator=(const __gnu_cxx::__normal_iterator<int*, std::vector<int> >&)
class __normal_iterator
^
/usr/include/c++/4.8/bits/stl_iterator.h:708:11: note: no known conversion for argument 1 from 'std::vector<int>::const_iterator {aka __gnu_cxx::__normal_iterator<const int*, std::vector<int> >}' to 'const __gnu_cxx::__normal_iterator<int*, std::vector<int> >&'
/usr/include/c++/4.8/bits/stl_iterator.h:708:11: note: __gnu_cxx::__normal_iterator<int*, std::vector<int> >& __gnu_cxx::__normal_iterator<int*, std::vector<int> >::operator= (__gnu_cxx::__normal_iterator<int*, std::vector<int> >&&)
/usr/include/c++/4.8/bits/stl_iterator.h:708:11: note: no known conversion for argument 1 f
最佳答案
您需要使用 vector<int>::const_iterator
而不是 vector<int>::iterator
.
如果您正在使用支持 C++11 或更高版本的编译器,您可以使用 auto
类型。
auto i = A.begin();
关于c++ - 为什么我的 vector 迭代器没有显示 operator=?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40117317/