在哈希表中插入一个struct对象
Inserting an object of struct into a hash table C++
我目前正在做一个涉及哈希表的项目。我已经在一个文本文件中读取到符号结构的向量，我现在必须插入这些结构(对象，真的)到哈希表。我得到了一个特定的插入函数来使用，然而，我似乎不能让它工作。我已经包括了下面的插入函数以及我的Driver.cpp文件，其中包含在文件中读取到结构体向量和我试图将其插入哈希表。
我将感谢任何帮助/反馈，我在哪里做错了。
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <string>
#include <time.h>
#include <unistd.h>
#include "SeparateChaining.h"
using namespace std;
struct Symbol
{
int type;
string name;
};
size_t hash(const string & key); //declaration of hashing function
int main()
{
/************ VARS ***************/
string line;
int line_count;
int table_size;
int increment;
/************ Vector of Symbols ***************/
vector<Symbol> symbols;
/************ HashTable of Symbols ***************/
HashTable<Symbol> hashtable; //precomputed to have 101 elements --> probably will change this to accomodate table size.
cout << "Opening file..." << endl;
usleep(2000000);
ifstream file;
file.open("symbols.txt");
if(!file)
{
cout << "System failed to open file.";
}
else
{
cout << "File successfully opened" << endl;
}
cout << "Please enter the table size for the Hash Table. (NOTE: It MUST be a prime number.)" << endl;
cin >> table_size;
for(Symbol temp; file >> temp.name >> temp.type;)
{
symbols.push_back(temp);
increment++;
}
//Just to test and see if its loading it correctly...
for(int i = 0; i < symbols.size(); i++)
{
cout << symbols[i].name << endl;
cout << symbols[i].type << endl;
}
for(int j = 0; j < symbols.size(); j++)
{
hashtable.insert(symbols); // Messing up here !!!!!!!!!!!!!
}
//cout << ::hash("hi") << endl;
}
size_t hash( const string & key )
{
size_t hashVal = 0;
for( char ch : key )
hashVal = 37 * hashVal + ch;
return hashVal;
}
在separatechaing .h:
中插入函数bool insert( const HashedObj & x )
{
auto & whichList = theLists[ myhash( x ) ];
if( find( begin( whichList ), end( whichList ), x ) != end( whichList) )
return false;
whichList.push_back( x );
// Rehash; see Section 5.5
if( ++currentSize > theLists.size( ) )
rehash( );
return true;
}
bool insert( HashedObj && x )
{
auto & whichList = theLists[ myhash( x ) ];
if( find( begin( whichList ), end( whichList ), x ) != end( whichList ) )
return false;
whichList.push_back( std::move( x ) );
// Rehash; see Section 5.5
if( ++currentSize > theLists.size( ) )
rehash( );
return true;
}
hashtable.insert(symbols):
Driver.cpp: In function 'int main()':
Driver.cpp:65:27: error: no matching function for call to 'HashTable<Symbol>::insert(std::vector<Symbol>&)'
Driver.cpp:65:27: note: candidates are:
In file included from Driver.cpp:8:0:
SeparateChaining.h:44:10: note: bool HashTable<HashedObj>::insert(const HashedObj&) [with HashedObj = Symbol]
SeparateChaining.h:44:10: note: no known conversion for argument 1 from 'std::vector<Symbol>' to 'const Symbol&'
SeparateChaining.h:58:10: note: bool HashTable<HashedObj>::insert(HashedObj&&) [with HashedObj = Symbol]
SeparateChaining.h:58:10: note: no known conversion for argument 1 from 'std::vector<Symbol>' to 'Symbol&&'
使用hashtable.insert(symbols[j])对vector进行自增操作时出错:
In file included from /opt/local/include/gcc47/c++/bits/basic_string.h:3032:0,
from /opt/local/include/gcc47/c++/string:54,
from /opt/local/include/gcc47/c++/bits/locale_classes.h:42,
from /opt/local/include/gcc47/c++/bits/ios_base.h:43,
from /opt/local/include/gcc47/c++/ios:43,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/functional_hash.h: In instantiation of 'struct std::hash<Symbol>':
SeparateChaining.h:107:32: required from 'size_t HashTable<HashedObj>::myhash(const HashedObj&) const [with HashedObj = Symbol; size_t = long unsigned int]'
SeparateChaining.h:46:50: required from 'bool HashTable<HashedObj>::insert(const HashedObj&) [with HashedObj = Symbol]'
Driver.cpp:65:30: required from here
/opt/local/include/gcc47/c++/bits/functional_hash.h:60:7: error: static assertion failed: std::hash is not specialized for this type
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h: In instantiation of '_InputIterator std::__find(_InputIterator, _InputIterator, const _Tp&, std::input_iterator_tag) [with _InputIterator = std::_List_iterator<Symbol>; _Tp = Symbol]':
/opt/local/include/gcc47/c++/bits/stl_algo.h:4466:45: required from '_IIter std::find(_IIter, _IIter, const _Tp&) [with _IIter = std::_List_iterator<Symbol>; _Tp = Symbol]'
SeparateChaining.h:47:9: required from 'bool HashTable<HashedObj>::insert(const HashedObj&) [with HashedObj = Symbol]'
Driver.cpp:65:30: required from here
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: error: no match for 'operator==' in '__first.std::_List_iterator<_Tp>::operator*<Symbol>() == __val'
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: candidates are:
In file included from /opt/local/include/gcc47/c++/bits/stl_algo.h:68:0,
from /opt/local/include/gcc47/c++/algorithm:63,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/functional:2382:5: note: template<class _Res, class ... _Args> bool std::operator==(std::nullptr_t, const std::function<_Res(_ArgTypes ...)>&)
/opt/local/include/gcc47/c++/functional:2382:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: cannot convert '__first.std::_List_iterator<_Tp>::operator*<Symbol>()' (type 'Symbol') to type 'std::nullptr_t'
In file included from /opt/local/include/gcc47/c++/bits/stl_algo.h:68:0,
from /opt/local/include/gcc47/c++/algorithm:63,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/functional:2376:5: note: template<class _Res, class ... _Args> bool std::operator==(const std::function<_Res(_ArgTypes ...)>&, std::nullptr_t)
/opt/local/include/gcc47/c++/functional:2376:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::function<_Res(_ArgTypes ...)>'
In file included from /opt/local/include/gcc47/c++/functional:56:0,
from /opt/local/include/gcc47/c++/bits/stl_algo.h:68,
from /opt/local/include/gcc47/c++/algorithm:63,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/tuple:797:5: note: template<class ... _TElements, class ... _UElements> bool std::operator==(const std::tuple<_Elements ...>&, const std::tuple<_Elements ...>&)
/opt/local/include/gcc47/c++/tuple:797:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::tuple<_Elements ...>'
In file included from /opt/local/include/gcc47/c++/random:51:0,
from /opt/local/include/gcc47/c++/bits/stl_algo.h:67,
from /opt/local/include/gcc47/c++/algorithm:63,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/random.tcc:1713:5: note: template<class _RealType1> bool std::operator==(const std::normal_distribution<_RealType>&, const std::normal_distribution<_RealType>&)
/opt/local/include/gcc47/c++/bits/random.tcc:1713:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::normal_distribution<_RealType>'
In file included from /opt/local/include/gcc47/c++/list:64:0,
from SeparateChaining.h:6,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_list.h:1574:5: note: template<class _Tp, class _Alloc> bool std::operator==(const std::list<_Tp, _Alloc>&, const std::list<_Tp, _Alloc>&)
/opt/local/include/gcc47/c++/bits/stl_list.h:1574:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::list<_Tp, _Alloc>'
In file included from /opt/local/include/gcc47/c++/list:64:0,
from SeparateChaining.h:6,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_list.h:277:5: note: template<class _Val> bool std::operator==(const std::_List_iterator<_Tp>&, const std::_List_const_iterator<_Val>&)
/opt/local/include/gcc47/c++/bits/stl_list.h:277:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::_List_iterator<_Tp>'
In file included from /opt/local/include/gcc47/c++/vector:65:0,
from Driver.cpp:4:
/opt/local/include/gcc47/c++/bits/stl_vector.h:1370:5: note: template<class _Tp, class _Alloc> bool std::operator==(const std::vector<_Tp, _Alloc>&, const std::vector<_Tp, _Alloc>&)
/opt/local/include/gcc47/c++/bits/stl_vector.h:1370:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::vector<_Tp, _Alloc>'
In file included from /opt/local/include/gcc47/c++/bits/locale_facets.h:50:0,
from /opt/local/include/gcc47/c++/bits/basic_ios.h:39,
from /opt/local/include/gcc47/c++/ios:45,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/streambuf_iterator.h:206:5: note: template<class _CharT, class _Traits> bool std::operator==(const std::istreambuf_iterator<_CharT, _Traits>&, const std::istreambuf_iterator<_CharT, _Traits>&)
/opt/local/include/gcc47/c++/bits/streambuf_iterator.h:206:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::istreambuf_iterator<_CharT, _Traits>'
In file included from /opt/local/include/gcc47/c++/string:54:0,
from /opt/local/include/gcc47/c++/bits/locale_classes.h:42,
from /opt/local/include/gcc47/c++/bits/ios_base.h:43,
from /opt/local/include/gcc47/c++/ios:43,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/basic_string.h:2516:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator==(const std::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)
/opt/local/include/gcc47/c++/bits/basic_string.h:2516:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
In file included from /opt/local/include/gcc47/c++/string:54:0,
from /opt/local/include/gcc47/c++/bits/locale_classes.h:42,
from /opt/local/include/gcc47/c++/bits/ios_base.h:43,
from /opt/local/include/gcc47/c++/ios:43,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/basic_string.h:2504:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator==(const _CharT*, const std::basic_string<_CharT, _Traits, _Alloc>&)
/opt/local/include/gcc47/c++/bits/basic_string.h:2504:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: mismatched types 'const _CharT*' and 'Symbol'
In file included from /opt/local/include/gcc47/c++/string:54:0,
from /opt/local/include/gcc47/c++/bits/locale_classes.h:42,
from /opt/local/include/gcc47/c++/bits/ios_base.h:43,
from /opt/local/include/gcc47/c++/ios:43,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/basic_string.h:2490:5: note: template<class _CharT> typename __gnu_cxx::__enable_if<std::__is_char<_Tp>::__value, bool>::__type std::operator==(const std::basic_string<_CharT>&, const std::basic_string<_CharT>&)
/opt/local/include/gcc47/c++/bits/basic_string.h:2490:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::basic_string<_CharT>'
In file included from /opt/local/include/gcc47/c++/string:54:0,
from /opt/local/include/gcc47/c++/bits/locale_classes.h:42,
from /opt/local/include/gcc47/c++/bits/ios_base.h:43,
from /opt/local/include/gcc47/c++/ios:43,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/basic_string.h:2483:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator==(const std::basic_string<_CharT, _Traits, _Alloc>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
/opt/local/include/gcc47/c++/bits/basic_string.h:2483:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
In file included from /opt/local/include/gcc47/c++/string:43:0,
from /opt/local/include/gcc47/c++/bits/locale_classes.h:42,
from /opt/local/include/gcc47/c++/bits/ios_base.h:43,
from /opt/local/include/gcc47/c++/ios:43,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/allocator.h:124:5: note: template<class _Tp> bool std::operator==(const std::allocator<_CharT>&, const std::allocator<_CharT>&)
/opt/local/include/gcc47/c++/bits/allocator.h:124:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::allocator<_CharT>'
In file included from /opt/local/include/gcc47/c++/string:43:0,
from /opt/local/include/gcc47/c++/bits/locale_classes.h:42,
from /opt/local/include/gcc47/c++/bits/ios_base.h:43,
from /opt/local/include/gcc47/c++/ios:43,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/allocator.h:119:5: note: template<class _T1, class _T2> bool std::operator==(const std::allocator<_CharT>&, const std::allocator<_T2>&)
/opt/local/include/gcc47/c++/bits/allocator.h:119:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::allocator<_CharT>'
In file included from /opt/local/include/gcc47/c++/bits/stl_algobase.h:68:0,
from /opt/local/include/gcc47/c++/bits/char_traits.h:41,
from /opt/local/include/gcc47/c++/ios:41,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/stl_iterator.h:1039:5: note: template<class _Iterator> bool std::operator==(const std::move_iterator<_Iterator>&, const std::move_iterator<_Iterator>&)
/opt/local/include/gcc47/c++/bits/stl_iterator.h:1039:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::move_iterator<_Iterator>'
In file included from /opt/local/include/gcc47/c++/bits/stl_algobase.h:68:0,
from /opt/local/include/gcc47/c++/bits/char_traits.h:41,
from /opt/local/include/gcc47/c++/ios:41,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/stl_iterator.h:1033:5: note: template<class _IteratorL, class _IteratorR> bool std::operator==(const std::move_iterator<_Iterator>&, const std::move_iterator<_IteratorR>&)
/opt/local/include/gcc47/c++/bits/stl_iterator.h:1033:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::move_iterator<_Iterator>'
In file included from /opt/local/include/gcc47/c++/bits/stl_algobase.h:68:0,
from /opt/local/include/gcc47/c++/bits/char_traits.h:41,
from /opt/local/include/gcc47/c++/ios:41,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/stl_iterator.h:343:5: note: template<class _IteratorL, class _IteratorR> bool std::operator==(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)
/opt/local/include/gcc47/c++/bits/stl_iterator.h:343:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::reverse_iterator<_Iterator>'
In file included from /opt/local/include/gcc47/c++/bits/stl_algobase.h:68:0,
from /opt/local/include/gcc47/c++/bits/char_traits.h:41,
from /opt/local/include/gcc47/c++/ios:41,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/stl_iterator.h:293:5: note: template<class _Iterator> bool std::operator==(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)
/opt/local/include/gcc47/c++/bits/stl_iterator.h:293:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::reverse_iterator<_Iterator>'
In file included from /opt/local/include/gcc47/c++/bits/stl_algobase.h:65:0,
from /opt/local/include/gcc47/c++/bits/char_traits.h:41,
from /opt/local/include/gcc47/c++/ios:41,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/stl_pair.h:206:5: note: template<class _T1, class _T2> constexpr bool std::operator==(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)
/opt/local/include/gcc47/c++/bits/stl_pair.h:206:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::pair<_T1, _T2>'
In file included from /opt/local/include/gcc47/c++/iosfwd:42:0,
from /opt/local/include/gcc47/c++/ios:39,
from /opt/local/include/gcc47/c++/ostream:40,
from /opt/local/include/gcc47/c++/iostream:40,
from Driver.cpp:1:
/opt/local/include/gcc47/c++/bits/postypes.h:218:5: note: template<class _StateT> bool std::operator==(const std::fpos<_StateT>&, const std::fpos<_StateT>&)
/opt/local/include/gcc47/c++/bits/postypes.h:218:5: note: template argument deduction/substitution failed:
In file included from /opt/local/include/gcc47/c++/algorithm:63:0,
from SeparateChaining.h:8,
from Driver.cpp:8:
/opt/local/include/gcc47/c++/bits/stl_algo.h:135:7: note: 'Symbol' is not derived from 'const std::fpos<_StateT>'
Try
hashtable.insert(symbols[j]);
同样，您不使用increment, line_count或table_size，您只需设置它们。
解释:您试图插入整个向量，而不是它的元素，因此数据类型不匹配。通过使用数组表示法，您可以获取想要插入的实际元素。
为什么你甚至使用向量而不是直接插入你的符号到哈希表?
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