class People
{
public :
People(int iage,char *n)
{
age = iage ;
strcpy(name,n) ;
}
bool operator >(const People& m) const
{
return( (this->age) > m.getage() ) ;
}
int getage() const {return age;}
const char* getname() const {return name;}
private :
int age ;
char name[28] ;
} ;
int main()
{
vector<People> v1 ;
vector<People> v2 ;
vector<People> v3 ;
vector<vector<People> > vx ;
char namex[3][20] = {"People1","People2","People3"} ;
for(int idx=0;idx<30;idx++)
{
if( (idx%3)==0)
v1.emplace_back(idx,namex[0]) ;
else if( (idx%3)==1)
v2.emplace_back(idx,namex[1]) ;
else
v3.emplace_back(idx,namex[2]) ;
}//for
vx.push_back(v1) ;
vx.push_back(v2) ;
vx.push_back(v3) ;
cout << "ready " << endl ;
vector<People> v = merge_arrays<People>(vx) ;
cout << "done " << endl ;
char tmp[10] = "12345" ;
People iret(0,tmp) ;
while(!v.empty())
{
iret = v.back() ;
v.pop_back() ;
cout << iret.getage() << " " << iret.getname() << endl ;
} //while
cout << endl ;
}
template <typename T>
class Compare{
public:
bool operator()(const pair<T,int> &lhs,const pair<T,int> &rhs) const{
return lhs.first > rhs.first ;
//T t1 = lhs.first ;
//T t2 = rhs.first ;
//return (t1 > t2) ;
}
} ;
template <typename T>
vector<T> merge_arrays(const vector<vector<T> > &S)
{
priority_queue<pair<T,int>,vector<pair<T,int> >,Compare<T> > min_heap;
vector<int> S_idx(S.size(),0) ;
for(int i=0;i<S.size();++i)
{
min_heap.emplace(S[i][0],i) ;
S_idx[i] = 1 ;
} //for
vector<T> ret ;
while(!min_heap.empty())
{
pair<T,int> p = min_heap.top() ;
ret.emplace_back(p.first) ;
if(S_idx[p.second] < S[p.second].size())
{
min_heap.emplace(S[p.second][S_idx[p.second]++],p.second) ;
}
min_heap.pop() ;
} //while
return ret ;
}
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