C++ Tutorial/vector/vector sort — различия между версиями
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Версия 14:21, 25 мая 2010
sort NumbersVestor, mersge requires the sequences to be sorted
#include <iostream>
#include <vector>
#include <algorithm>
#include <list>
#include <deque>
using namespace std;
int main(void)
{
const int MAX_ELEMENTS = 8;
typedef vector<int> IntVector;
typedef IntVector::iterator IntVectorIt;
typedef list<int> IntList;
typedef IntList::iterator IntListIt;
typedef deque<int> IntDeque;
typedef IntDeque::iterator IntDequeIt;
IntVector NumbersVector(MAX_ELEMENTS);
IntVectorIt startv, endv, itv;
IntList NumbersList;
IntListIt first, last, itl;
IntDeque NumbersDeque(2 * MAX_ELEMENTS);
IntDequeIt itd;
NumbersVector[0] = 4;
NumbersVector[1] = 10;
NumbersVector[2] = 70;
NumbersVector[3] = 10;
NumbersVector[4] = 30;
NumbersVector[5] = 69;
NumbersVector[6] = 96;
NumbersVector[7] = 100;
startv = NumbersVector.begin(); //location of first element of NumbersVector
endv = NumbersVector.end(); //one past the last element of NumbersVector
//sort NumbersVestor, mersge requires the sequences to be sorted
sort(startv, endv);
//print content of NumbersVector
for(itv = startv; itv != endv; itv++)
cout << *itv << " ";
for(int i = 0; i < MAX_ELEMENTS; i++)
NumbersList.push_back(i);
}sort the smallest 4 elemetns in the Numbers and copy the results in Result
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main(void)
{
const int VECTOR_SIZE = 8;
typedef vector<int> IntVector;
typedef IntVector::iterator IntVectorIt;
IntVector Numbers(VECTOR_SIZE);
IntVector Result(4);
IntVectorIt start, end, it;
Numbers[0] = 4;
Numbers[1] = 10;
Numbers[2] = 70;
Numbers[3] = 30;
Numbers[4] = 10;
Numbers[5] = 69;
Numbers[6] = 96;
Numbers[7] = 7;
start = Numbers.begin();
end = Numbers.end();
for (it = start; it != end; it++)
cout << *it << " ";
partial_sort_copy(start, end, Result.begin(), Result.end());
for(it = start; it != end; it++)
cout << *it << " ";
for(it = Result.begin(); it != Result.end(); it++)
cout << *it << " ";
}Vector Insert Erase Sort
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
void print( vector<int> );
int main()
{
vector<int> vec(5);
print( vec );
vector<int>::iterator p = vec.begin();
cout << *p << endl;
vec.insert( vec.begin(), 9 );
print( vec );
cout << *p << endl;
p = vec.begin();
cout << *p << endl;
vec.erase( vec.begin() );
print( vec );
vec.insert( vec.begin() + 2, 8 );
print( vec );
vec.erase( vec.begin() + 2 );
print( vec );
vec.insert( vec.end(), 7 );
print( vec );
vec.erase( vec.end() - 1 );
print( vec );
vec.insert( vec.begin() + 3, 6 );
print( vec );
vec.erase( find( vec.begin(), vec.end(), 6 ) );
print( vec );
vec.insert( vec.begin() + 1, 3 );
vec.insert( vec.begin() + 5, 3 );
print( vec );
vec.erase( find( vec.begin(), vec.end(), 3 ) );
vec.erase( find( vec.begin(), vec.end(), 3 ) );
print( vec );
vec[0] = 23;
vec[1] = 2;
vec[2] = 16;
vec[3] = 45;
vec[4] = 16;
print( vec );
sort( vec.begin(), vec.end() );
print( vec );
return 0;
}
void print( vector<int> v ) {
vector<int>::iterator p = v.begin();
while ( p != v.end() )
cout << *p++ << " ";
cout << endl;
}